Email infrastructure of cmu.edu
According to Live Direct Marketing's daily DNS scan (September 7, 2026), cmu.edu (Tranco rank #1,827) points its inbound MX to Google Workspace. Its observed DMARC policy is p=none (monitoring). Policy alone does not establish inbox or spam placement.
Last updated: .
| Mailbox provider (MX) | Google Workspace |
|---|---|
| ESPs in SPF | none detected |
| SaaS senders in SPF | none detected |
| DMARC policy | p=none |
| DMARC record | v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu |
| Tranco rank | #1,827 |
| Snapshot | 2026-09-07 (updated daily) |
Keep an eye on cmu.edu
Get a first health report, then meaningful changes to SPF, DMARC, MX, sampled MX PTR and blocklists. See your domain history and run a real inbox placement test from your private watchlist.
Manage existing subscriptions →How cmu.edu compares
Same daily dataset, three views: how its mailbox provider is trending, how strict DMARC is at its position in the list, and where its own policy sits among all DMARC publishers in the dataset.
Market share of Google Workspace
DMARC enforced by list position
Policy maturity of all DMARC publishers
From observation to a useful check
- What was observed
- The DNS records and classifications in this snapshot.
- What it means
- MX describes inbound mail; SPF authorizes senders.
- What is unknown
- The actual sending IP, nested SPF dependencies, inbox placement and commercial relationships. MTA-STS, TLS-RPT and BIMI adoption are not measured.
- Next check
- Verify current DNS and test a real message: run an inbox placement test.
DNS records
Source: OpenINTEL / Tranco. Capture: 2026-09-07. These are answers from the measurement vantage point, not a live DNS check. TTL is the observed cache lifetime in seconds.
cmu.edu · A — Answer records observed
IPv4 addresses for this name. They do not identify the mail server or prove a hosting migration.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · A · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
128.2.42.10 - cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=1340b6d6d17fd08dfa6ba7ec5cf16fea5cc914933d7a53c74ef419ff0a7351019e2592295b35179b22c748d071037b1fa2d8bc966d8635be62a4a01aef191111322030ede35b2cf5e2b6a5a6b2976453a31dac60c699792142455f09c039ceb3f063574e2a8d77c795b85606307d2526f9cb266058c80c3aa5efd59869aec10e; signature_expiration=1790373640; signature_inception=1787780144; signer_name=cmu.edu.; type_covered=A
cmu.edu · AAAA — Unknown: no conclusive answer in this capture
IPv6 addresses for this name. An address record does not test service availability.
cmu.edu · NS — Answer records observed
Name servers listed for the DNS zone.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · NS · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
NSAUTH1.NET.cmu.edu. - cmu.edu · NS · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
NSAUTH2.NET.cmu.edu. - cmu.edu · NS · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
NSAUTH3.NET.cmu.edu. - cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=a970bf018196da40887301e4f5995556cab88ddaf0be8ad770c463d177d05e3b4edd145eac7fa144344d0595d6028e9a6e1535ef5c5119c73c8adedc87d4a77a47f1a1f70271ebd33b90e3335c5bfc4913824c71ecf816a7cd5ccd2b8659c18b9d1bb936e21df371f2fd0ee30c804d9391e05e11c59f262c74611b566ab3d6e2; signature_expiration=1789999633; signature_inception=1787407552; signer_name=cmu.edu.; type_covered=NS
cmu.edu · MX — Answer records observed
Servers named to receive mail. Lower preference numbers are tried first.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · MX · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
1 ASPMX.L.GOOGLE.COM. - cmu.edu · MX · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
5 ALT1.ASPMX.L.GOOGLE.COM. - cmu.edu · MX · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
5 ALT2.ASPMX.L.GOOGLE.COM. - cmu.edu · MX · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
10 ALT3.ASPMX.L.GOOGLE.COM. - cmu.edu · MX · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
10 ALT4.ASPMX.L.GOOGLE.COM. - cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=77f82ace7c82284d131b03f6ddcdd8e3e01e7eaf8de9f31ab3215f4c1f3a5367cc45000361da7cb374a27e9aeaace350ef5c5d90fa191d28579a631395c083c8fda2d2d1c59be02d523df1f06af21ac2fa318f512e5ea34319573b397f6e0708fb88ab0ff28556040b6ab4a9088d4a00e8c9f84a674e3806ec3ad1cca9367edf; signature_expiration=1789897202; signature_inception=1787301933; signer_name=cmu.edu.; type_covered=MX
cmu.edu · SOA — Answer records observed
Zone administration data. The serial is a version number, not a creation date or clock.
Query observed at: 2026-09-07T00:05:37Z.
Response code: 0.
- cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:37Z · AD=1
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=9758123f91ad70f48f45e2761bac848fde854c3560179dfad76917fc8a3bc2d6d79ea1e1324cdbf73e971092aaf07fc9bd074a6037ca4d6c4abd6a1d1ba89a320ac5deeb031d3e1620cdd8b027e7d841bd5f4c4ebc84673b88e0664f0f5a6ddaabb8635a87e6dbb5955480b2ed11d7c23fa491719d1406ddb7cc8aa603695a24; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu.; type_covered=SOA - cmu.edu · SOA · TTL 21600 s · 2026-09-07T00:05:37Z · AD=1
expire=3600000; minimum=21600; mname=nsauth-master.net.cmu.edu.; refresh=900; retry=450; rname=host-master.andrew.cmu.edu.; serial=20532193
cmu.edu · CAA — Unknown: no conclusive answer in this capture
Rules for certificate issuance. These do not show whether an existing certificate is valid.
cmu.edu · TXT — Answer records observed
Text records can publish mail policies, domain-control challenges or other data.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · RRSIG · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; key_tag=6947; labels=2; original_ttl=3600; signature=460b35c93cc07294a8bb41e98d795c0dfecaf1ed54b0f694eefc0415bb2e58f8a7532894aca7d32ab9d200581da1f41493c4ba3a948e6200f9299cd244b0fce05016d5275c41535cac01b859db4c4dbc9fc9dc0303b021dfe119db1691cb70f1761b4fa8411920d1a3b288769e7add10bfde05dec42f1300855e8edf7500c58e; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu.; type_covered=TXT Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"00df4000000231leaa"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"A8809FFAB54BD9C6F7DFBE92616764D0"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"EECD69320F38F645362247248BD675F4"Domain-control verification for Microsoft; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"MS=ms17583017"Domain-control verification for Zoom (legacy); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"Domain-control verification for Airtable; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"airtable-verification=878daeee4665d51015a6dda912bbb9f5"Domain-control verification for Apple; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"apple-domain-verification=yZrPHuazhdH42CPf"Domain-control verification for Atlassian (Jira / Confluence); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"Domain-control verification for Cisco CI; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"Domain-control verification for DocuSign; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"e2ma-verification=fu2"Domain-control verification for Meta (Facebook); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"SPF: authorized mail senders; not proof that mail was sent.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"v=spf1 include:_spf.cmu.edu ~all"Domain-control verification for Zoho; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT · TTL 3600 s · 2026-09-07T00:05:38Z · AD=1"zoho-verification=zb38550127.zmverify.zoho.com"
cmu.edu · DNSKEY — Answer records observed
DNSSEC key, signature or denial-of-existence data observed in this response.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · DNSKEY · TTL 21600 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; flags=256; pk_rsa_bitsize=1024; pk_rsa_e=010001; pk_rsa_n=ae4a82f9537f6674f1b7a06b8b64818f244b758e0f7da66895e462238288722b9defc7a346a65cb7f88c10f74e85e419ae6e1b3347128f2ec0108a89b0bc1f27d935eb9d76adc256a24da56f4ce112befdff596dbf60eeee787584ee8c235b2553a2e7f5067e03bca771964ee700d53144b3d98fa18f6842d6ac3450a14caa17; protocol=3 - cmu.edu · DNSKEY · TTL 21600 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; flags=257; pk_rsa_bitsize=2048; pk_rsa_e=010001; pk_rsa_n=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; protocol=3 - cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; key_tag=56259; labels=2; original_ttl=21600; signature=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; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu.; type_covered=DNSKEY - cmu.edu · RRSIG · TTL 21600 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=2d796a08380b957456631e6b7f45701e6ff3f91d8ccee790e8625425d52ad137a774b1b02e0857ede99d702c6520cd284cc90f67cef9553918e0bc78de7e13f36816b65ede03794f832b27e018d5193956983fdf7f9a683f0bee3df1e63cebd84714fd2c5a581d64fa833fd5a8dedf88e2cd73074e5293a775373c07baf7758a; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu.; type_covered=DNSKEY
cmu.edu · DS — Answer records observed
DNSSEC key, signature or denial-of-existence data observed in this response.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- cmu.edu · DS · TTL 86400 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; digest=585e955d36ab11a225e22b42e713c9bc8b0347b7; digest_type=1; key_tag=56259 - cmu.edu · DS · TTL 86400 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; digest=83f3ea220349ecd74852847f838121275ff28f3c0806b853133bcef61e1d8205; digest_type=2; key_tag=56259 - cmu.edu · RRSIG · TTL 86400 s · 2026-09-07T00:05:38Z · AD=1
algorithm=13; key_tag=6705; labels=2; original_ttl=86400; signature=bfb7d952fb00570ff11f5a658653af51282e2a3ddc4bee335660ff4d679e362786f02bd7967dc9f0315c9688618caf4ccf33775c5e24b4c8edf5120e01baf85b; signature_expiration=1789097687; signature_inception=1788488687; signer_name=edu.; type_covered=DS
cmu.edu · CDS — Unknown: no conclusive answer in this capture
DNSSEC key, signature or denial-of-existence data observed in this response.
cmu.edu · CDNSKEY — Unknown: no conclusive answer in this capture
DNSSEC key, signature or denial-of-existence data observed in this response.
www.cmu.edu · A — Answer records observed
IPv4 addresses for this name. They do not identify the mail server or prove a hosting migration.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- www.cmu.edu · CNAME · TTL 60 s · 2026-09-07T00:05:38Z · AD=0
WWW.R53.cmu.edu. - www.cmu.edu · RRSIG · TTL 60 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu.; type_covered=CNAME - www.r53.cmu.edu · A · TTL 60 s · 2026-09-07T00:05:38Z · AD=0
128.2.42.52
www.cmu.edu · AAAA — Answer records observed
IPv6 addresses for this name. An address record does not test service availability.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- www.cmu.edu · CNAME · TTL 60 s · 2026-09-07T00:05:38Z · AD=0
WWW.R53.cmu.edu. - www.cmu.edu · RRSIG · TTL 60 s · 2026-09-07T00:05:38Z · AD=0
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu.; type_covered=CNAME
_dmarc.cmu.edu · TXT — Answer records observed
Text records can publish mail policies, domain-control challenges or other data.
Query observed at: 2026-09-07T00:05:38Z.
Response code: 0.
- _dmarc.cmu.edu · RRSIG · TTL 300 s · 2026-09-07T00:05:38Z · AD=1
algorithm=7; key_tag=6947; labels=3; original_ttl=300; signature=3b6cd4c91a5b7049d7477c0125e32e218b11d443c061efd614f658941a896ef214b6cd3641fdea8ce399caf33e87c0b8e54950e5bc95bb7818285499ba7f80703a87a69b79396e477863ee219ee8ec84b0c00d64527951165c009f0871849065f8c0266a797b34dd1324f341875609242c18f5fc15d119af4399354483e5a808; signature_expiration=1789599603; signature_inception=1787006591; signer_name=cmu.edu.; type_covered=TXT DMARC: published handling and reporting policy for authentication failures.
Raw TXT value
_dmarc.cmu.edu · TXT · TTL 300 s · 2026-09-07T00:05:38Z · AD=1"v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu"
DNSSEC records are shown only when returned. An unset AD flag is not proof that a zone is unsigned. MTA-STS, TLS-RPT, BIMI and arbitrary DKIM selectors are not measured here; their absence cannot be inferred.
Recorded DNS history
Registry presence: first seen 2026-04-28; last seen 2026-09-07. These are appearances in our domain registry, not domain registration dates or earlier DNS values.
This history starts with saved RR captures. Provider market-share charts are aggregate context, not this domain’s DNS history. Dates identify observations; no continuous validity between them is implied. Equivalent RR states are combined, ignoring response TTL and capture-time changes. Up to 30 distinct RR states and 60 dated captures are retained within a per-domain byte limit.
Recent observed differences
2026-09-05 → 2026-09-07
cmu.edu · SOA
Before: 2026-09-05 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=02cb156fd5a453f95ef632b46e115e32547f25eb2fe128ac5169f0212abf6ac9d918faab5938ef4495fd5e3115bca3787c02d5722771bf3aab191ea6195b8bd695a02aedef4aa40ece849d41f52347c7457d70c8a7b84168996cbbdf23ab63fb39ddda65cf97c65437d21c2e9c3251d8055164121808bc7492542f69d2a04057; signature_expiration=1791158109; signature_inception=1788562509; signer_name=cmu.edu; type_covered=SOA - cmu.edu · SOA
expire=3600000; minimum=21600; mname=nsauth-master.net.cmu.edu; refresh=900; retry=450; rname=host-master.andrew.cmu.edu; serial=20531538
After: 2026-09-07 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=9758123f91ad70f48f45e2761bac848fde854c3560179dfad76917fc8a3bc2d6d79ea1e1324cdbf73e971092aaf07fc9bd074a6037ca4d6c4abd6a1d1ba89a320ac5deeb031d3e1620cdd8b027e7d841bd5f4c4ebc84673b88e0664f0f5a6ddaabb8635a87e6dbb5955480b2ed11d7c23fa491719d1406ddb7cc8aa603695a24; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu; type_covered=SOA - cmu.edu · SOA
expire=3600000; minimum=21600; mname=nsauth-master.net.cmu.edu; refresh=900; retry=450; rname=host-master.andrew.cmu.edu; serial=20532193
cmu.edu · TXT
Before: 2026-09-05 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=3600; signature=367d7df67ca67ccf622c811d32599cedfe342ad7a6abaf3a332bf38fc21273b89f956b80910a00a727c49311b69c7a80725f1531ca68c57618978abd915b7ba1f0827f135a68d5be5268f425f960a7330398df066d17f624bc2cfa68afadd69abd07e3791bf4fddc9265dbbeb1edddebf446e0db1ff36d597caa8767c75e66a4; signature_expiration=1791158109; signature_inception=1788562509; signer_name=cmu.edu; type_covered=TXT Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"00df4000000231leaa"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"A8809FFAB54BD9C6F7DFBE92616764D0"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"EECD69320F38F645362247248BD675F4"Domain-control verification for Microsoft; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"MS=ms17583017"Domain-control verification for Zoom (legacy); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"Domain-control verification for Airtable; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"airtable-verification=878daeee4665d51015a6dda912bbb9f5"Domain-control verification for Apple; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"apple-domain-verification=yZrPHuazhdH42CPf"Domain-control verification for Atlassian (Jira / Confluence); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"Domain-control verification for Cisco CI; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"Domain-control verification for DocuSign; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"e2ma-verification=fu2"Domain-control verification for Meta (Facebook); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"SPF: authorized mail senders; not proof that mail was sent.
Raw TXT value
cmu.edu · TXT"v=spf1 include:_spf.cmu.edu ~all"Domain-control verification for Zoho; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"zoho-verification=zb38550127.zmverify.zoho.com"
After: 2026-09-07 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=3600; signature=460b35c93cc07294a8bb41e98d795c0dfecaf1ed54b0f694eefc0415bb2e58f8a7532894aca7d32ab9d200581da1f41493c4ba3a948e6200f9299cd244b0fce05016d5275c41535cac01b859db4c4dbc9fc9dc0303b021dfe119db1691cb70f1761b4fa8411920d1a3b288769e7add10bfde05dec42f1300855e8edf7500c58e; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu; type_covered=TXT Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"00df4000000231leaa"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"A8809FFAB54BD9C6F7DFBE92616764D0"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"EECD69320F38F645362247248BD675F4"Domain-control verification for Microsoft; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"MS=ms17583017"Domain-control verification for Zoom (legacy); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"Domain-control verification for Airtable; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"airtable-verification=878daeee4665d51015a6dda912bbb9f5"Domain-control verification for Apple; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"apple-domain-verification=yZrPHuazhdH42CPf"Domain-control verification for Atlassian (Jira / Confluence); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"Domain-control verification for Cisco CI; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"Domain-control verification for DocuSign; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"e2ma-verification=fu2"Domain-control verification for Meta (Facebook); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"SPF: authorized mail senders; not proof that mail was sent.
Raw TXT value
cmu.edu · TXT"v=spf1 include:_spf.cmu.edu ~all"Domain-control verification for Zoho; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"zoho-verification=zb38550127.zmverify.zoho.com"
Available saved snapshots
2026-09-07
Each query below keeps its own observation date; unknown checks may retain older values.
_dmarc.cmu.edu · TXT
2026-09-07 — Answer records observed
- _dmarc.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=300; signature=3b6cd4c91a5b7049d7477c0125e32e218b11d443c061efd614f658941a896ef214b6cd3641fdea8ce399caf33e87c0b8e54950e5bc95bb7818285499ba7f80703a87a69b79396e477863ee219ee8ec84b0c00d64527951165c009f0871849065f8c0266a797b34dd1324f341875609242c18f5fc15d119af4399354483e5a808; signature_expiration=1789599603; signature_inception=1787006591; signer_name=cmu.edu; type_covered=TXT DMARC: published handling and reporting policy for authentication failures.
Raw TXT value
_dmarc.cmu.edu · TXT"v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu"
cmu.edu · A
2026-09-07 — Answer records observed
- cmu.edu · A
128.2.42.10 - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=1340b6d6d17fd08dfa6ba7ec5cf16fea5cc914933d7a53c74ef419ff0a7351019e2592295b35179b22c748d071037b1fa2d8bc966d8635be62a4a01aef191111322030ede35b2cf5e2b6a5a6b2976453a31dac60c699792142455f09c039ceb3f063574e2a8d77c795b85606307d2526f9cb266058c80c3aa5efd59869aec10e; signature_expiration=1790373640; signature_inception=1787780144; signer_name=cmu.edu; type_covered=A
cmu.edu · DNSKEY
2026-09-07 — Answer records observed
- cmu.edu · DNSKEY
algorithm=7; flags=256; pk_rsa_bitsize=1024; pk_rsa_e=010001; pk_rsa_n=ae4a82f9537f6674f1b7a06b8b64818f244b758e0f7da66895e462238288722b9defc7a346a65cb7f88c10f74e85e419ae6e1b3347128f2ec0108a89b0bc1f27d935eb9d76adc256a24da56f4ce112befdff596dbf60eeee787584ee8c235b2553a2e7f5067e03bca771964ee700d53144b3d98fa18f6842d6ac3450a14caa17; protocol=3 - cmu.edu · DNSKEY
algorithm=7; flags=257; pk_rsa_bitsize=2048; pk_rsa_e=010001; pk_rsa_n=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; protocol=3 - cmu.edu · RRSIG
algorithm=7; key_tag=56259; labels=2; original_ttl=21600; signature=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; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu; type_covered=DNSKEY - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=2d796a08380b957456631e6b7f45701e6ff3f91d8ccee790e8625425d52ad137a774b1b02e0857ede99d702c6520cd284cc90f67cef9553918e0bc78de7e13f36816b65ede03794f832b27e018d5193956983fdf7f9a683f0bee3df1e63cebd84714fd2c5a581d64fa833fd5a8dedf88e2cd73074e5293a775373c07baf7758a; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu; type_covered=DNSKEY
cmu.edu · DS
2026-09-07 — Answer records observed
- cmu.edu · DS
algorithm=7; digest=585e955d36ab11a225e22b42e713c9bc8b0347b7; digest_type=1; key_tag=56259 - cmu.edu · DS
algorithm=7; digest=83f3ea220349ecd74852847f838121275ff28f3c0806b853133bcef61e1d8205; digest_type=2; key_tag=56259 - cmu.edu · RRSIG
algorithm=13; key_tag=6705; labels=2; original_ttl=86400; signature=bfb7d952fb00570ff11f5a658653af51282e2a3ddc4bee335660ff4d679e362786f02bd7967dc9f0315c9688618caf4ccf33775c5e24b4c8edf5120e01baf85b; signature_expiration=1789097687; signature_inception=1788488687; signer_name=edu; type_covered=DS
cmu.edu · MX
2026-09-07 — Answer records observed
- cmu.edu · MX
1 aspmx.l.google.com - cmu.edu · MX
5 alt1.aspmx.l.google.com - cmu.edu · MX
5 alt2.aspmx.l.google.com - cmu.edu · MX
10 alt3.aspmx.l.google.com - cmu.edu · MX
10 alt4.aspmx.l.google.com - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=77f82ace7c82284d131b03f6ddcdd8e3e01e7eaf8de9f31ab3215f4c1f3a5367cc45000361da7cb374a27e9aeaace350ef5c5d90fa191d28579a631395c083c8fda2d2d1c59be02d523df1f06af21ac2fa318f512e5ea34319573b397f6e0708fb88ab0ff28556040b6ab4a9088d4a00e8c9f84a674e3806ec3ad1cca9367edf; signature_expiration=1789897202; signature_inception=1787301933; signer_name=cmu.edu; type_covered=MX
cmu.edu · NS
2026-09-07 — Answer records observed
- cmu.edu · NS
nsauth1.net.cmu.edu - cmu.edu · NS
nsauth2.net.cmu.edu - cmu.edu · NS
nsauth3.net.cmu.edu - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=a970bf018196da40887301e4f5995556cab88ddaf0be8ad770c463d177d05e3b4edd145eac7fa144344d0595d6028e9a6e1535ef5c5119c73c8adedc87d4a77a47f1a1f70271ebd33b90e3335c5bfc4913824c71ecf816a7cd5ccd2b8659c18b9d1bb936e21df371f2fd0ee30c804d9391e05e11c59f262c74611b566ab3d6e2; signature_expiration=1789999633; signature_inception=1787407552; signer_name=cmu.edu; type_covered=NS
cmu.edu · SOA
2026-09-07 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=9758123f91ad70f48f45e2761bac848fde854c3560179dfad76917fc8a3bc2d6d79ea1e1324cdbf73e971092aaf07fc9bd074a6037ca4d6c4abd6a1d1ba89a320ac5deeb031d3e1620cdd8b027e7d841bd5f4c4ebc84673b88e0664f0f5a6ddaabb8635a87e6dbb5955480b2ed11d7c23fa491719d1406ddb7cc8aa603695a24; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu; type_covered=SOA - cmu.edu · SOA
expire=3600000; minimum=21600; mname=nsauth-master.net.cmu.edu; refresh=900; retry=450; rname=host-master.andrew.cmu.edu; serial=20532193
cmu.edu · TXT
2026-09-07 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=3600; signature=460b35c93cc07294a8bb41e98d795c0dfecaf1ed54b0f694eefc0415bb2e58f8a7532894aca7d32ab9d200581da1f41493c4ba3a948e6200f9299cd244b0fce05016d5275c41535cac01b859db4c4dbc9fc9dc0303b021dfe119db1691cb70f1761b4fa8411920d1a3b288769e7add10bfde05dec42f1300855e8edf7500c58e; signature_expiration=1791331209; signature_inception=1788735609; signer_name=cmu.edu; type_covered=TXT Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"00df4000000231leaa"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"A8809FFAB54BD9C6F7DFBE92616764D0"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"EECD69320F38F645362247248BD675F4"Domain-control verification for Microsoft; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"MS=ms17583017"Domain-control verification for Zoom (legacy); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"Domain-control verification for Airtable; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"airtable-verification=878daeee4665d51015a6dda912bbb9f5"Domain-control verification for Apple; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"apple-domain-verification=yZrPHuazhdH42CPf"Domain-control verification for Atlassian (Jira / Confluence); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"Domain-control verification for Cisco CI; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"Domain-control verification for DocuSign; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"e2ma-verification=fu2"Domain-control verification for Meta (Facebook); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"SPF: authorized mail senders; not proof that mail was sent.
Raw TXT value
cmu.edu · TXT"v=spf1 include:_spf.cmu.edu ~all"Domain-control verification for Zoho; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"zoho-verification=zb38550127.zmverify.zoho.com"
www.cmu.edu · A
2026-09-07 — Answer records observed
- www.cmu.edu · CNAME
www.r53.cmu.edu - www.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu; type_covered=CNAME - www.r53.cmu.edu · A
128.2.42.52
www.cmu.edu · AAAA
2026-09-07 — Answer records observed
- www.cmu.edu · CNAME
www.r53.cmu.edu - www.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu; type_covered=CNAME
2026-09-05
Each query below keeps its own observation date; unknown checks may retain older values.
_dmarc.cmu.edu · TXT
2026-09-05 — Answer records observed
- _dmarc.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=300; signature=3b6cd4c91a5b7049d7477c0125e32e218b11d443c061efd614f658941a896ef214b6cd3641fdea8ce399caf33e87c0b8e54950e5bc95bb7818285499ba7f80703a87a69b79396e477863ee219ee8ec84b0c00d64527951165c009f0871849065f8c0266a797b34dd1324f341875609242c18f5fc15d119af4399354483e5a808; signature_expiration=1789599603; signature_inception=1787006591; signer_name=cmu.edu; type_covered=TXT DMARC: published handling and reporting policy for authentication failures.
Raw TXT value
_dmarc.cmu.edu · TXT"v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu"
cmu.edu · A
2026-09-05 — Answer records observed
- cmu.edu · A
128.2.42.10 - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=1340b6d6d17fd08dfa6ba7ec5cf16fea5cc914933d7a53c74ef419ff0a7351019e2592295b35179b22c748d071037b1fa2d8bc966d8635be62a4a01aef191111322030ede35b2cf5e2b6a5a6b2976453a31dac60c699792142455f09c039ceb3f063574e2a8d77c795b85606307d2526f9cb266058c80c3aa5efd59869aec10e; signature_expiration=1790373640; signature_inception=1787780144; signer_name=cmu.edu; type_covered=A
cmu.edu · DNSKEY
2026-09-05 — Answer records observed
- cmu.edu · DNSKEY
algorithm=7; flags=256; pk_rsa_bitsize=1024; pk_rsa_e=010001; pk_rsa_n=ae4a82f9537f6674f1b7a06b8b64818f244b758e0f7da66895e462238288722b9defc7a346a65cb7f88c10f74e85e419ae6e1b3347128f2ec0108a89b0bc1f27d935eb9d76adc256a24da56f4ce112befdff596dbf60eeee787584ee8c235b2553a2e7f5067e03bca771964ee700d53144b3d98fa18f6842d6ac3450a14caa17; protocol=3 - cmu.edu · DNSKEY
algorithm=7; flags=257; pk_rsa_bitsize=2048; pk_rsa_e=010001; pk_rsa_n=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; protocol=3 - cmu.edu · RRSIG
algorithm=7; key_tag=56259; labels=2; original_ttl=21600; signature=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; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu; type_covered=DNSKEY - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=2d796a08380b957456631e6b7f45701e6ff3f91d8ccee790e8625425d52ad137a774b1b02e0857ede99d702c6520cd284cc90f67cef9553918e0bc78de7e13f36816b65ede03794f832b27e018d5193956983fdf7f9a683f0bee3df1e63cebd84714fd2c5a581d64fa833fd5a8dedf88e2cd73074e5293a775373c07baf7758a; signature_expiration=1790142951; signature_inception=1787549230; signer_name=cmu.edu; type_covered=DNSKEY
cmu.edu · DS
2026-09-05 — Answer records observed
- cmu.edu · DS
algorithm=7; digest=585e955d36ab11a225e22b42e713c9bc8b0347b7; digest_type=1; key_tag=56259 - cmu.edu · DS
algorithm=7; digest=83f3ea220349ecd74852847f838121275ff28f3c0806b853133bcef61e1d8205; digest_type=2; key_tag=56259 - cmu.edu · RRSIG
algorithm=13; key_tag=6705; labels=2; original_ttl=86400; signature=bfb7d952fb00570ff11f5a658653af51282e2a3ddc4bee335660ff4d679e362786f02bd7967dc9f0315c9688618caf4ccf33775c5e24b4c8edf5120e01baf85b; signature_expiration=1789097687; signature_inception=1788488687; signer_name=edu; type_covered=DS
cmu.edu · MX
2026-09-05 — Answer records observed
- cmu.edu · MX
1 aspmx.l.google.com - cmu.edu · MX
5 alt1.aspmx.l.google.com - cmu.edu · MX
5 alt2.aspmx.l.google.com - cmu.edu · MX
10 alt3.aspmx.l.google.com - cmu.edu · MX
10 alt4.aspmx.l.google.com - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=77f82ace7c82284d131b03f6ddcdd8e3e01e7eaf8de9f31ab3215f4c1f3a5367cc45000361da7cb374a27e9aeaace350ef5c5d90fa191d28579a631395c083c8fda2d2d1c59be02d523df1f06af21ac2fa318f512e5ea34319573b397f6e0708fb88ab0ff28556040b6ab4a9088d4a00e8c9f84a674e3806ec3ad1cca9367edf; signature_expiration=1789897202; signature_inception=1787301933; signer_name=cmu.edu; type_covered=MX
cmu.edu · NS
2026-09-05 — Answer records observed
- cmu.edu · NS
nsauth1.net.cmu.edu - cmu.edu · NS
nsauth2.net.cmu.edu - cmu.edu · NS
nsauth3.net.cmu.edu - cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=a970bf018196da40887301e4f5995556cab88ddaf0be8ad770c463d177d05e3b4edd145eac7fa144344d0595d6028e9a6e1535ef5c5119c73c8adedc87d4a77a47f1a1f70271ebd33b90e3335c5bfc4913824c71ecf816a7cd5ccd2b8659c18b9d1bb936e21df371f2fd0ee30c804d9391e05e11c59f262c74611b566ab3d6e2; signature_expiration=1789999633; signature_inception=1787407552; signer_name=cmu.edu; type_covered=NS
cmu.edu · SOA
2026-09-05 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=21600; signature=02cb156fd5a453f95ef632b46e115e32547f25eb2fe128ac5169f0212abf6ac9d918faab5938ef4495fd5e3115bca3787c02d5722771bf3aab191ea6195b8bd695a02aedef4aa40ece849d41f52347c7457d70c8a7b84168996cbbdf23ab63fb39ddda65cf97c65437d21c2e9c3251d8055164121808bc7492542f69d2a04057; signature_expiration=1791158109; signature_inception=1788562509; signer_name=cmu.edu; type_covered=SOA - cmu.edu · SOA
expire=3600000; minimum=21600; mname=nsauth-master.net.cmu.edu; refresh=900; retry=450; rname=host-master.andrew.cmu.edu; serial=20531538
cmu.edu · TXT
2026-09-05 — Answer records observed
- cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=2; original_ttl=3600; signature=367d7df67ca67ccf622c811d32599cedfe342ad7a6abaf3a332bf38fc21273b89f956b80910a00a727c49311b69c7a80725f1531ca68c57618978abd915b7ba1f0827f135a68d5be5268f425f960a7330398df066d17f624bc2cfa68afadd69abd07e3791bf4fddc9265dbbeb1edddebf446e0db1ff36d597caa8767c75e66a4; signature_expiration=1791158109; signature_inception=1788562509; signer_name=cmu.edu; type_covered=TXT Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"00df4000000231leaa"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"A8809FFAB54BD9C6F7DFBE92616764D0"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"EECD69320F38F645362247248BD675F4"Domain-control verification for Microsoft; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"MS=ms17583017"Domain-control verification for Zoom (legacy); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"Domain-control verification for Airtable; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"airtable-verification=878daeee4665d51015a6dda912bbb9f5"Domain-control verification for Apple; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"apple-domain-verification=yZrPHuazhdH42CPf"Domain-control verification for Atlassian (Jira / Confluence); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"Domain-control verification for Cisco CI; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"Domain-control verification for DocuSign; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"e2ma-verification=fu2"Domain-control verification for Meta (Facebook); not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"Domain-control verification for Google; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="Other TXT data; its purpose is not established by this measurement.
Raw TXT value
cmu.edu · TXT"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"SPF: authorized mail senders; not proof that mail was sent.
Raw TXT value
cmu.edu · TXT"v=spf1 include:_spf.cmu.edu ~all"Domain-control verification for Zoho; not proof of active SaaS or mail use.
Raw TXT value
cmu.edu · TXT"zoho-verification=zb38550127.zmverify.zoho.com"
www.cmu.edu · A
2026-09-05 — Answer records observed
- www.cmu.edu · CNAME
www.r53.cmu.edu - www.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu; type_covered=CNAME - www.r53.cmu.edu · A
128.2.42.52
www.cmu.edu · AAAA
2026-09-05 — Answer records observed
- www.cmu.edu · CNAME
www.r53.cmu.edu - www.cmu.edu · RRSIG
algorithm=7; key_tag=6947; labels=3; original_ttl=60; signature=8dd2b3de5cbb600527443c2f76e29b9b93afc56ae7b5acb5f0bff7ebce5d9bb5dd6112bf414f706237871987555a4b0f867c9ce0e1b510f8bf414dfbcb3c579087aeab2a779fd9b078472313faa633ec0e025826c19fc91846e9543f4d51d7c9d67557659559d1f0ddfc6975076cd7d95210e44569ee6a40ef47110ba30b6ce7; signature_expiration=1790650337; signature_inception=1788056033; signer_name=cmu.edu; type_covered=CNAME
Changes to cmu.edu
No entry for this domain appears in the current public change feed. The feed is a selected sample, so this does not establish that its DNS stayed unchanged.
Start monitoring to build a history from your first check, or explore observed changes across the dataset.
SPF diagnostics
Static observations from the published SPF record. No nested include or redirect dependencies were evaluated. The actual sending IP and evaluation path are needed to assess the RFC 7208 limit of 10 DNS-dependent terms.
Modern mail security across the dataset
The required DNS labels are not queried. Adoption is unknown for this domain and for the population. Apex TXT anomalies are listed separately in the security posture report.
Reverse DNS of inbound MX hosts
These are separately dated observations of inbound MX addresses. They do not identify the actual sending IP. To assess outbound mail, check current forward and reverse DNS of the actual sending IP; FCrDNS and delivery were not measured here.
aspmx.l.google.com
PTR records were observed for all returned addresses of this MX.
DNS attempt: 2026-09-07 05:30:17 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.
| Observed IP | Observed PTR names | DNS observation |
|---|---|---|
173.194.79.26 | eg-in-f26.1e100.net | PTR observed |
2a00:1450:4013:c02::1b | ec-in-x1b.1e100.net | PTR observed |
Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.
alt1.aspmx.l.google.com
PTR records were observed for all returned addresses of this MX.
DNS attempt: 2026-09-07 05:30:17 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.
| Observed IP | Observed PTR names | DNS observation |
|---|---|---|
172.253.148.27 | yuskedq-in-f27.1e100.net | PTR observed |
2a00:1450:4025:4401::1a | yuskedq-in-f26.1e100.net | PTR observed |
Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.
The observed IP 172.253.148.27 is also associated with 4 other MX hostnames. Outbound use and reputation were not measured.
alt2.aspmx.l.google.com
PTR records were observed for all returned addresses of this MX.
DNS attempt: 2026-09-07 05:30:17 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.
| Observed IP | Observed PTR names | DNS observation |
|---|---|---|
142.250.147.27 | rd-in-f27.1e100.net | PTR observed |
2a00:1450:4025:c01::1b | rd-in-f27.1e100.net | PTR observed |
Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.
The observed IP 142.250.147.27 is also associated with 2 other MX hostnames. Outbound use and reputation were not measured.
alt3.aspmx.l.google.com
PTR records were observed for all returned addresses of this MX.
DNS attempt: 2026-09-07 05:30:17 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.
| Observed IP | Observed PTR names | DNS observation |
|---|---|---|
172.253.152.27 | yulpptr-in-f27.1e100.net | PTR observed |
2a00:1450:4010:c22::1b | yulpptr-in-f27.1e100.net | PTR observed |
Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.
The observed IP 2a00:1450:4010:c22::1b is also associated with 1 other MX hostnames. Outbound use and reputation were not measured.
alt4.aspmx.l.google.com
PTR records were observed for all returned addresses of this MX.
DNS attempt: 2026-09-07 05:30:17 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.
| Observed IP | Observed PTR names | DNS observation |
|---|---|---|
192.178.211.26 | lcbomp-in-f26.1e100.net | PTR observed |
2404:6800:4000:1025::1b | lcbomp-in-f27.1e100.net | PTR observed |
Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.
The observed IP 192.178.211.26 is also associated with 4 other MX hostnames. Outbound use and reputation were not measured.
Where cmu.edu stands
The same snapshot cut by zone, by list position and by how alive the published policies are.
- At this list position the top three mailbox providers hold 63.0% of domains (Google Workspace, Microsoft 365, Unknown / Other).
- Across the dataset 25.1% of DMARC records are inert — policy does nothing and no reports are collected.
How to interpret these observations
MX identifies the observed inbound mailbox or gateway. SPF includes identify services authorised to send for the domain. DMARC shows the published authentication policy. The dataset currently contains 2 populated signal groups for this page.
Observed deliverability context: based on the available observations, this page describes DNS configuration only. It does not represent a complete audit of cmu.edu and does not prove that a particular message reaches the inbox or spam folder.
Frequently asked questions
What email provider does cmu.edu use?
cmu.edu uses Google Workspace for inbound mail (detected from its primary MX record) as of September 7, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Does cmu.edu enforce DMARC?
No — cmu.edu publishes p=none, which only monitors and does not block spoofing (as of September 7, 2026).
Related domain statistics
Nearby domains in the Tranco ranking: avira.com · fao.org · themoviedb.org · avto.net
Browse provider data · Compare historical periods · Run an inbox placement test
Data: Email infrastructure of the Tranco top-1M, daily snapshot 2026-09-07, derived from OpenINTEL forward-DNS measurements. Cite with the date — records change daily.