columbia.com

Observed Jul 18, 2026, 12:26 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Secured byDigiCert

Registered withMarkMonitor Inc.

Also usesDocuSignMiroGoogle Search ConsoleAtlassianFigma

IPv6 · 1 subdomain · push_legacy

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

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

columbia.com

A / AAAA

104.18.67.112104.18.68.1122606:4700::6812:43702606:4700::6812:4470

Cloudflareserves the site

pdns1.ultradns.netpdns2.ultradns.netpdns3.ultradns.orgpdns4.ultradns.org+2 more

ultradns.net + ultradns.org + moreanswers its DNS

columbia-com.mail.protection.outlook.com

Microsoft 365receives its email

TLS

columbia.com

DigiCert Incissued its certificate

DNS Records

A 2

104.18.67.112
104.18.68.112

AAAA 2

2606:4700::6812:4370
2606:4700::6812:4470

MX 1

0columbia-com.mail.protection.outlook.com

TXT 30

MS=ms73399519
00DWB000008NokH=1TBWB0000000KOX
_dkt2x19pgqzs91115z7ea869hg1j34l
1146f980ea784356d44fa8fc04a6f625.columbia.com
docusign=61c3b2f7-d0d2-4100-afc1-db9099e0f984
jamf-site-verification=8xwmpY_1toxN3ds0Jpg_3A
bw=fMTAKpuO9i4MoazozYby6bltj5ZnN1hCyRI9NlPu3dOO
b47420b292ef17828a0950d3affc8b71cda92324df0701f0c5
airtable-verification=099df3384f94699900c8e2a7b8707826
cloudflare_dashboard_sso=d1d48741b7bc6d9e0bad6b42eb113354

NS 6

pdns1.ultradns.net
pdns2.ultradns.net
pdns3.ultradns.org
pdns4.ultradns.org
pdns5.ultradns.info
pdns6.ultradns.co.uk

SOA 1

pdns1.ultradns.net domainservices.columbia.com

SRV 3

expe1.columbia.com:5060 p10
expe1.columbia.com:5061 p10
use-p-uni-exe1.columbia.com:5269 p10

TLS Certificates (3)

Common Name	Issuer	Expires
`columbia.com`	C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1	Tue, 25 Aug 2026 23:59:59 +0000
`DigiCert Global G2 TLS RSA SHA256 2020 CA1`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Mon, 23 Sep 2030 23:59:59 +0000
`DigiCert Global Root G2`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root CA	Sun, 09 Nov 2031 23:59:59 +0000

Subdomains (1)

www.columbia.com

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 columbia.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: a122de47-4bb1-4b6b-8a48-33ed8b93ff33
Output Hash: e9c84411025ff061bb7fe0ea900a4e3f69847a8bbfe8467e66061e121530cf66
Signature: ed25519:5e758ed8910f42276d4851540a0df4c56ec6ba7ce4e353adede38664bd712e58d34e8a146c2cc6715a56d07993ca321a0750dee6220d73a382df27852221dd03
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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