cogent.com

Observed Jul 24, 2026, 02:42 UTC (2h 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

Runs onAmazon

Email byGoogle Workspace

Secured byLet's Encrypt

Registered withNameCheap, Inc.

Also usesGoogle Search Console

telecom

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

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

cogent.com

A / AAAA

31.43.161.631.43.160.6

Amazonserves the site

damian.ns.cloudflare.comkarsyn.ns.cloudflare.com

cloudflare.comanswers its DNS

smtp.google.com

Google Workspacereceives its email

TLS

cogent.com

Let's Encryptissued its certificate

DNS Records

A 2

31.43.161.6
31.43.160.6

MX 1

1smtp.google.com

TXT 5

google-gws-recovery-domain-verification=67106797
google-site-verification=1EC0T0HPhX5TVPdSd-wRtFbupJohQ-KcS-Em8l_kUso
google-site-verification=pele0Z-5fnyjGbOQuvvYxvJ5xX8J-ZBU2LRbuhaMKTM
v=spf1 include:_spf.google.com ~all
v=DMARC1; p=quarantine; rua=mailto:postmaster@cogent.com, mailto:dmarc@cogent.com; pct=100; adkim=s; aspf=s

NS 2

damian.ns.cloudflare.com
karsyn.ns.cloudflare.com

SOA 1

damian.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`cogent.com`	C=US, O=Let's Encrypt, CN=YE2	Mon, 28 Sep 2026 13:44:14 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (0)

None observed.

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

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

Ed25519 Receipt

Receipt ID: rcpt_13d9e7c9b59be158
Output Hash: 2853709df39f7be713b125f85e0b8d0e527b759ec9cb08d3f17d0460d86be411
Signature: ed25519:b68df43399a78de6c093491118cde3398b6066d777cb0d5345fb796d84e547224f72af0094a01e6eb19cf65da2fdf2c44b1115060662eb6dce1e7720867b5a0b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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