uptodate.com

Observed Jul 24, 2026, 20:11 UTC (9d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Email byMicrosoft 365

Secured byGoDaddy.com

31 subdomains · tranco

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat uptodate.com actually stands on - every host below is a signed observation

uptodate.com

A / AAAA

12.130.132.46

unattributedserves the site

ns-east.cerf.netcbru.br.ns.els-gms.att.netcmtu.mt.ns.els-gms.att.netns-west.cerf.net

cerf.net + att.netanswers its DNS

wolterskluwer.mail.protection.outlook.commx1.wolterskluwer.iphmx.commx2.wolterskluwer.iphmx.com

Microsoft 365receives its email

TLS

www.uptodate.com

GoDaddy.comissued its certificate

DNS Records

A 1

12.130.132.46

MX 3

10wolterskluwer.mail.protection.outlook.com
20mx1.wolterskluwer.iphmx.com
30mx2.wolterskluwer.iphmx.com

TXT 16

dufnivoofdh809ot5poplbtluv
v=spf1 include:spf.wolterskluwer.com include:spf.uat-wolterskluwer.uat.corrivo.online include:spf.wolterskluwer.corrivo.io ~all
f2q3iqsf0k45ukaa6o1qbs0tbf
9b9p49v7kldu43rvea4eaevl4b
itov13ji8osrob7b9ki5nh71dc
k8og5jvcf2q05fsf7r5rdr526
tc3hm78vmql594ilmbdlqthnvs
_0xxrjw3j0bzd316cmzzfrze2h9vemir
_7fawqp9i04cdylifscmbsoqn7krfqdw
_gi3dv7z506lqjb1v0mkftmqko91gppz

NS 4

ns-east.cerf.net
cbru.br.ns.els-gms.att.net
cmtu.mt.ns.els-gms.att.net
ns-west.cerf.net

SOA 1

cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com

SRV 1

webmail.uptodate.com:443 p0

TLS Certificates (3)

Common Name	Issuer	Expires
`www.uptodate.com`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., 2.5.4.11=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2	Wed, 09 Sep 2026 19:17:18 +0000
`Go Daddy Secure Certificate Authority - G2`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., CN=Go Daddy Root Certificate Authority - G2	Sat, 03 May 2031 07:00:00 +0000
`Go Daddy Root Certificate Authority - G2`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., CN=Go Daddy Root Certificate Authority - G2	Thu, 31 Dec 2037 23:59:59 +0000

Subdomains (31)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for uptodate.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/uptodate.com">
  <img src="https://domaindrift.io/badge/uptodate.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for uptodate.com">
</a>

Ed25519 Receipt

Receipt ID: rcpt_2f19530ea0b70246
Output Hash: 228e5550e55c17550ca439fedca7d589764f7c2656bf56b63120d560ba470ba7
Signature: ed25519:a835478c68455be027fae7cb52e902119868b2229a39808dc4c19c3fbd7a0f4c10a6fb69f6274458fc1a2cd8ef527a23ae0a3130409b0aee0f75c2306f90af0d
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/uptodate.com