Email infrastructure of shaw.ca

According to Live Direct Marketing's daily DNS scan (September 7, 2026), shaw.ca (Tranco rank #8,008) points its inbound MX to Unknown / Other and authorizes Amazon SES in SPF. Its observed DMARC policy is p=none (monitoring). Policy alone does not establish inbox or spam placement.

Last updated: .

Mailbox provider (MX)Unknown / Other
ESPs in SPFAmazon SES
SaaS senders in SPFnone detected
DMARC policyp=none
DMARC recordv=DMARC1; p=none; pct=100; rua=mailto:dmarc_rua_report@shaw.ca
Tranco rank#8,008
Snapshot2026-09-07 (updated daily)

Keep an eye on shaw.ca

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How shaw.ca 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 Unknown / Other

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.

shaw.ca · A — Answer records observed

IPv4 addresses for this name. They do not identify the mail server or prove a hosting migration.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • shaw.ca · A · TTL 60 s · 2026-09-07T00:30:54Z · AD=0
    23.49.131.241
shaw.ca · AAAA — Unknown: no conclusive answer in this capture

IPv6 addresses for this name. An address record does not test service availability.

shaw.ca · NS — Answer records observed

Name servers listed for the DNS zone.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    a1-220.akam.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    a3-64.akam.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    a6-65.akam.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    a8-66.akam.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    a9-67.akam.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    ns7nocg.shawcable.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    ns8socg.shawcable.net.
  • shaw.ca · NS · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    ns9htok.shawcable.net.
shaw.ca · MX — Answer records observed

Servers named to receive mail. Lower preference numbers are tried first.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • shaw.ca · MX · TTL 300 s · 2026-09-07T00:30:54Z · AD=0
    0 shw-central.mx.a.cloudfilter.net.
shaw.ca · SOA — Answer records observed

Zone administration data. The serial is a version number, not a creation date or clock.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • shaw.ca · SOA · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    expire=604800; minimum=600; mname=ns7.no.cg.shawcable.net.; refresh=10800; retry=3600; rname=dnsadmin.shaw.ca.; serial=2011239542
shaw.ca · CAA — Unknown: no conclusive answer in this capture

Rules for certificate issuance. These do not show whether an existing certificate is valid.

shaw.ca · TXT — Answer records observed

Text records can publish mail policies, domain-control challenges or other data.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "_hd2obh8tpxfh46si2xxvumjcnk6kugb"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "_hoq9cc2ylyn5paahbdfuaqnaixzeblm"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "_k4duw0mkkjlwxv7r1h89quqiw52lx8c"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "_pingoneemail 49b62130-a618-473e-b9a9-3f851942854d_a3aa0505-558f-4057-8b38-0660d428f942"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "_z94723ek1rfrs1ty4zeoqbnwjg8ej0z"

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "amazonses:6S3m6/Yusws3EomTrDIEi0ghMZ214FFemYpU82vB8gA="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "amazonses:BNEH8VLffuwpaSEWUOQWhuC9+MO4kDWp/CGoRw8m+Y4="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "amazonses:vV3TlnCYRjcp2vP5W4XoLLysnOiLJOFf1x74MZhNwnA="

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "c44feb2a2563407ea9546691af5cf62a"

  • Domain-control verification for Google; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "google-site-verification=p8IEfugrvXGg-7ZWE1ixjSP3rGMOtWtz2huWkoNJdQk"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "j8QIdoU83VhjeGmSqo4J8nT1526W-5z32IaIMO1AGs4"

  • SPF: authorized mail senders; not proof that mail was sent.

    Raw TXT valueshaw.ca · TXT · TTL 3600 s · 2026-09-07T00:30:54Z · AD=0
    "v=spf1 mx ip4:3.97.99.32/31 ip4:3.97.99.42/31 ip4:64.59.134.0/25 ip4:64.59.136.128/27 ip4:204.209.208.40/31 ip4:204.209.208.150/28 include:amazonses.com ~all"
shaw.ca · DNSKEY — Unknown: no conclusive answer in this capture

DNSSEC key, signature or denial-of-existence data observed in this response.

shaw.ca · DS — Unknown: no conclusive answer in this capture

DNSSEC key, signature or denial-of-existence data observed in this response.

shaw.ca · CDS — Unknown: no conclusive answer in this capture

DNSSEC key, signature or denial-of-existence data observed in this response.

shaw.ca · CDNSKEY — Unknown: no conclusive answer in this capture

DNSSEC key, signature or denial-of-existence data observed in this response.

www.shaw.ca · A — Answer records observed

IPv4 addresses for this name. They do not identify the mail server or prove a hosting migration.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • e3863.a.akamaiedge.net · A · TTL 20 s · 2026-09-07T00:30:54Z · AD=0
    23.218.53.161
  • shaw.ca-v1.edgekey.net · CNAME · TTL 21600 s · 2026-09-07T00:30:54Z · AD=0
    e3863.a.akamaiedge.net.
  • www.shaw.ca · CNAME · TTL 300 s · 2026-09-07T00:30:54Z · AD=0
    shaw.ca-v1.edgekey.net.
www.shaw.ca · AAAA — Answer records observed

IPv6 addresses for this name. An address record does not test service availability.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • shaw.ca-v1.edgekey.net · CNAME · TTL 21600 s · 2026-09-07T00:30:54Z · AD=0
    e3863.a.akamaiedge.net.
  • www.shaw.ca · CNAME · TTL 300 s · 2026-09-07T00:30:54Z · AD=0
    shaw.ca-v1.edgekey.net.
_dmarc.shaw.ca · TXT — Answer records observed

Text records can publish mail policies, domain-control challenges or other data.

Query observed at: 2026-09-07T00:30:54Z.

Response code: 0.

  • DMARC: published handling and reporting policy for authentication failures.

    Raw TXT value_dmarc.shaw.ca · TXT · TTL 86400 s · 2026-09-07T00:30:54Z · AD=0
    "v=DMARC1; p=none; pct=100; rua=mailto:dmarc_rua_report@shaw.ca"

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

shaw.ca · SOA

Before: 2026-09-05 — Answer records observed

  • shaw.ca · SOA
    expire=604800; minimum=600; mname=ns7.no.cg.shawcable.net; refresh=10800; retry=3600; rname=dnsadmin.shaw.ca; serial=2011239538

After: 2026-09-07 — Answer records observed

  • shaw.ca · SOA
    expire=604800; minimum=600; mname=ns7.no.cg.shawcable.net; refresh=10800; retry=3600; rname=dnsadmin.shaw.ca; serial=2011239542

www.shaw.ca · A

Before: 2026-09-05 — Answer records observed

  • e3863.a.akamaiedge.net · A
    184.24.166.181
  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net

After: 2026-09-07 — Answer records observed

  • e3863.a.akamaiedge.net · A
    23.218.53.161
  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net
Available saved snapshots
2026-09-07

Each query below keeps its own observation date; unknown checks may retain older values.

_dmarc.shaw.ca · TXT

2026-09-07 — Answer records observed

  • DMARC: published handling and reporting policy for authentication failures.

    Raw TXT value_dmarc.shaw.ca · TXT
    "v=DMARC1; p=none; pct=100; rua=mailto:dmarc_rua_report@shaw.ca"

shaw.ca · A

2026-09-07 — Answer records observed

  • shaw.ca · A
    23.49.131.241

shaw.ca · MX

2026-09-07 — Answer records observed

  • shaw.ca · MX
    0 shw-central.mx.a.cloudfilter.net

shaw.ca · NS

2026-09-07 — Answer records observed

  • shaw.ca · NS
    a1-220.akam.net
  • shaw.ca · NS
    a3-64.akam.net
  • shaw.ca · NS
    a6-65.akam.net
  • shaw.ca · NS
    a8-66.akam.net
  • shaw.ca · NS
    a9-67.akam.net
  • shaw.ca · NS
    ns7nocg.shawcable.net
  • shaw.ca · NS
    ns8socg.shawcable.net
  • shaw.ca · NS
    ns9htok.shawcable.net

shaw.ca · SOA

2026-09-07 — Answer records observed

  • shaw.ca · SOA
    expire=604800; minimum=600; mname=ns7.no.cg.shawcable.net; refresh=10800; retry=3600; rname=dnsadmin.shaw.ca; serial=2011239542

shaw.ca · TXT

2026-09-07 — Answer records observed

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_hd2obh8tpxfh46si2xxvumjcnk6kugb"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_hoq9cc2ylyn5paahbdfuaqnaixzeblm"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_k4duw0mkkjlwxv7r1h89quqiw52lx8c"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_pingoneemail 49b62130-a618-473e-b9a9-3f851942854d_a3aa0505-558f-4057-8b38-0660d428f942"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_z94723ek1rfrs1ty4zeoqbnwjg8ej0z"

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:6S3m6/Yusws3EomTrDIEi0ghMZ214FFemYpU82vB8gA="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:BNEH8VLffuwpaSEWUOQWhuC9+MO4kDWp/CGoRw8m+Y4="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:vV3TlnCYRjcp2vP5W4XoLLysnOiLJOFf1x74MZhNwnA="

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "c44feb2a2563407ea9546691af5cf62a"

  • Domain-control verification for Google; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "google-site-verification=p8IEfugrvXGg-7ZWE1ixjSP3rGMOtWtz2huWkoNJdQk"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "j8QIdoU83VhjeGmSqo4J8nT1526W-5z32IaIMO1AGs4"

  • SPF: authorized mail senders; not proof that mail was sent.

    Raw TXT valueshaw.ca · TXT
    "v=spf1 mx ip4:3.97.99.32/31 ip4:3.97.99.42/31 ip4:64.59.134.0/25 ip4:64.59.136.128/27 ip4:204.209.208.40/31 ip4:204.209.208.150/28 include:amazonses.com ~all"

www.shaw.ca · A

2026-09-07 — Answer records observed

  • e3863.a.akamaiedge.net · A
    23.218.53.161
  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net

www.shaw.ca · AAAA

2026-09-07 — Answer records observed

  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net
2026-09-05

Each query below keeps its own observation date; unknown checks may retain older values.

_dmarc.shaw.ca · TXT

2026-09-05 — Answer records observed

  • DMARC: published handling and reporting policy for authentication failures.

    Raw TXT value_dmarc.shaw.ca · TXT
    "v=DMARC1; p=none; pct=100; rua=mailto:dmarc_rua_report@shaw.ca"

shaw.ca · A

2026-09-05 — Answer records observed

  • shaw.ca · A
    23.49.131.241

shaw.ca · MX

2026-09-05 — Answer records observed

  • shaw.ca · MX
    0 shw-central.mx.a.cloudfilter.net

shaw.ca · NS

2026-09-05 — Answer records observed

  • shaw.ca · NS
    a1-220.akam.net
  • shaw.ca · NS
    a3-64.akam.net
  • shaw.ca · NS
    a6-65.akam.net
  • shaw.ca · NS
    a8-66.akam.net
  • shaw.ca · NS
    a9-67.akam.net
  • shaw.ca · NS
    ns7nocg.shawcable.net
  • shaw.ca · NS
    ns8socg.shawcable.net
  • shaw.ca · NS
    ns9htok.shawcable.net

shaw.ca · SOA

2026-09-05 — Answer records observed

  • shaw.ca · SOA
    expire=604800; minimum=600; mname=ns7.no.cg.shawcable.net; refresh=10800; retry=3600; rname=dnsadmin.shaw.ca; serial=2011239538

shaw.ca · TXT

2026-09-05 — Answer records observed

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_hd2obh8tpxfh46si2xxvumjcnk6kugb"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_hoq9cc2ylyn5paahbdfuaqnaixzeblm"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_k4duw0mkkjlwxv7r1h89quqiw52lx8c"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_pingoneemail 49b62130-a618-473e-b9a9-3f851942854d_a3aa0505-558f-4057-8b38-0660d428f942"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "_z94723ek1rfrs1ty4zeoqbnwjg8ej0z"

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:6S3m6/Yusws3EomTrDIEi0ghMZ214FFemYpU82vB8gA="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:BNEH8VLffuwpaSEWUOQWhuC9+MO4kDWp/CGoRw8m+Y4="

  • Domain-control verification for Amazon SES; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "amazonses:vV3TlnCYRjcp2vP5W4XoLLysnOiLJOFf1x74MZhNwnA="

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "c44feb2a2563407ea9546691af5cf62a"

  • Domain-control verification for Google; not proof of active SaaS or mail use.

    Raw TXT valueshaw.ca · TXT
    "google-site-verification=p8IEfugrvXGg-7ZWE1ixjSP3rGMOtWtz2huWkoNJdQk"

  • Other TXT data; its purpose is not established by this measurement.

    Raw TXT valueshaw.ca · TXT
    "j8QIdoU83VhjeGmSqo4J8nT1526W-5z32IaIMO1AGs4"

  • SPF: authorized mail senders; not proof that mail was sent.

    Raw TXT valueshaw.ca · TXT
    "v=spf1 mx ip4:3.97.99.32/31 ip4:3.97.99.42/31 ip4:64.59.134.0/25 ip4:64.59.136.128/27 ip4:204.209.208.40/31 ip4:204.209.208.150/28 include:amazonses.com ~all"

www.shaw.ca · A

2026-09-05 — Answer records observed

  • e3863.a.akamaiedge.net · A
    184.24.166.181
  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net

www.shaw.ca · AAAA

2026-09-05 — Answer records observed

  • shaw.ca-v1.edgekey.net · CNAME
    e3863.a.akamaiedge.net
  • www.shaw.ca · CNAME
    shaw.ca-v1.edgekey.net

Changes to shaw.ca

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.

2DNS-dependent terms — nested dependencies are not checked; headroom is not confirmed
~allsoft fail — the common conservative default
157 Brecord length · mixed mechanisms

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.

MTA-STSNot measured in this dataset
TLS-RPTNot measured in this dataset
BIMINot measured in this dataset

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.

shw-central.mx.a.cloudfilter.net

PTR records were observed for all returned addresses of this MX.

DNS attempt: 2026-09-07 05:44:15 UTC. 2 of 2 addresses queried; 2 definite address results in the saved observation.

Observed IPObserved PTR namesDNS observation
15.222.199.59ec2-15-222-199-59.ca-central-1.compute.amazonaws.comPTR observed
3.96.81.40ec2-3-96-81-40.ca-central-1.compute.amazonaws.comPTR observed

Observed PTR names are outside this domain. Name relationships are not a forward-confirmed reverse DNS test.

Where shaw.ca stands

The same snapshot cut by zone, by list position and by how alive the published policies are.

Context of .ca

Most used sending platforms among 1,894 SPF-publishing domains in Canada: SendGrid (Twilio) 17.4% · Amazon SES 15.6% · Mailchimp 15.3% · Mailgun 11.9%. shaw.ca runs a stack that is typical for this zone.

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 3 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 shaw.ca and does not prove that a particular message reaches the inbox or spam folder.

Frequently asked questions

What email provider does shaw.ca use?

shaw.ca uses Unknown / Other for inbound mail (detected from its primary MX record) as of September 7, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

What ESP does shaw.ca use?

shaw.ca authorises Amazon SES in its SPF record as of September 7, 2026.

Does shaw.ca enforce DMARC?

No — shaw.ca 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: honeytoon.com · minecraft-inside.ru · adultwork.com · tumbex.com

Browse provider data · Compare historical periods · Run an inbox placement test

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Test My Email

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.