cern.ch

Observed 2026-07-12T21:06:24.101Z (22h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Also usesGoogle Search Console

IPv6 · 12 subdomains · tranco_5k

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

INFRASTRUCTURE MAPwhat cern.ch actually stands on - every host below is a signed observation

cern.ch

A / AAAA

188.184.77.2502001:1458:d00:3c::100:2f9

Cloudflareserves the site

scsnms.switch.chext-dns-1.cern.chext-dns-2.cern.ch

switch.ch + cern.chanswers its DNS

cern-ch.mail.protection.outlook.com

Microsoft 365receives its email

HTTPS probe

redirect Redirecting (3xx) 302 → https://home.cern

HTTP status302

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1689 ms

DNS resolutionNOERROR

Redirect chain

https://home.cern

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

188.184.77.250

AAAA 1

2001:1458:d00:3c::100:2f9

MX 1

10cern-ch.mail.protection.outlook.com

TXT 11

goqTmP4CYqgXEPONka9g8FCGD4vpvjieG4RI5NLxYZsBh/y5p88K9ym3zIFcLVbaYQdJkdhfYcjADXGdGMdSCA==
anthropic-domain-verification-4kfdsh=uvjsOh2bjwteama1zHsw7FZtw
google-site-verification=aoFc91q4kA9Xp_-Z_AFY1gI0AmXpTXIMcGseZfvH0J8
v=spf1 include:spf.cern.ch ?all
sinch-domain-verification=1fa8887b-9312-4ca2-85f8-75f7c1ba81fd
mistral-domain-verification=3a255465ec599b8016fb91a2f8563cc304e3b95d
MS=ms44269116
cursor-domain-verification-8t0p9r=J6wFIABgbtZfHacKasG8HDZ1p
autodesk-domain-verification=5Lt81tqLuEgD4wCC73YQ
openai-domain-verification=dv-R5PuLWpZKT8QhVzrlbLDHvBz

NS 3

scsnms.switch.ch
ext-dns-1.cern.ch
ext-dns-2.cern.ch

SOA 1

ext-dns-1.cern.ch external-dns.cern.ch

TLS Certificates (0)

None.

Subdomains (12)

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 cern.ch. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 53ac0c26-d46f-430d-8bbd-84b28f9543bd
Output Hash: ea457bc32702eecffc59b4fa3f1ca2b9e68dec8f16a20b18accabebf298768e9
Signature: ed25519:5add36ea4a0d3a94226f764c56c09365042684f7a9e345c3a99032eb6efb90c2ab53864e02f699aa934eb93a65622f3e6ed8447a719ecaf04fe324843e51c70e
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/cern.ch