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Microsoft Outlook.com — consumer mailbox.

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457SPF-authorising domains
0.073%of all SPF domains in Tranco top-1M
83distinct TLDs
2026-04-28snapshot date

TLD Distribution (top 30 of 83)

com — 185 (40.5%)
org — 37 (8.1%)
net — 20 (4.4%)
com.br — 16 (3.5%)
de — 14 (3.1%)
co.uk — 14 (3.1%)
fr — 11 (2.4%)
nl — 8 (1.8%)
ca — 7 (1.5%)
it — 7 (1.5%)
co.il — 7 (1.5%)
edu — 6 (1.3%)
be — 5 (1.1%)
es — 5 (1.1%)
com.au — 5 (1.1%)
edu.co — 4 (0.9%)
ru — 4 (0.9%)
co.jp — 4 (0.9%)
edu.eg — 4 (0.9%)
at — 4 (0.9%)
eu — 3 (0.7%)
se — 3 (0.7%)
jp — 3 (0.7%)
ac.kr — 3 (0.7%)
no — 3 (0.7%)
ro — 3 (0.7%)
cz — 3 (0.7%)
org.br — 2 (0.4%)
br — 2 (0.4%)
in — 2 (0.4%)

Domain Sample (top 100 by length)

p3.ruamo.czdhf.atmad.grnkc.nluhk.czvtu.bgwip.plbuy.comchef.sedel.orgeapn.euibuk.pllive.calive.delive.dklive.frlive.itlive.jplive.nllive.rulive.selmc.eduoco.netusr.comvlab.fi3chi.comabola.ptaflex.baalot.combyled.frdsinv.ruenova.nlfisk.edugeny.comhcpss.mehu.ac.thiahr.orgicrp.orgihost.aliscar.inistm.orgizar.netjscc.edulogic.kymsia.orgnanet.atninet.nfobeo.comparon.grpinc.comsima.orgtsis.netwfca.comavert.orgbohero.eucodigo.sefloyen.nofnclcc.frijfmr.comisbns.netjacsa.netng.edu.egnnr.co.jpno-w8.comoiu.ac.jprvp.co.thsubaru.uaswiha.eduswtor.comtricot.claltruan.deami.org.ilaprima.comasimut.netbankexp.rubatela.combloade.comcfa.com.cyemobile.jpemusic.comepa.org.ukequisol.fretmall.comflessio.defmsinc.comfujitv.comgenybet.frhostway.rohotmail.cahotmail.dehotmail.eshotmail.frhotmail.ithuluqa.comhycu.ac.kriitr.ac.ininit3bv.nljaiton.netjmam.co.jp

Showing 100 of 457 domains. Sample sorted by length (shortest first).