cuni.cz

Observed Jul 23, 2026, 23:18 UTC (51m 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 onCloudflare

Also usesGoogle Search Console

IPv6 · 6 subdomains · tranco_10k

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

INFRASTRUCTURE MAPwhat cuni.cz actually stands on - every host below is a signed observation

cuni.cz

A / AAAA

195.113.89.542001:718:1e03:622::60

Cloudflareserves the site

cuce.ruk.cuni.czdavid.ruk.cuni.cznsa.ces.netgolias.ruk.cuni.cz

cuni.cz + ces.netanswers its DNS

ag2.cesnet.czag1.cesnet.cz

cesnet.czreceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1514 ms

DNS resolutionNOERROR

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

DNS Records

A 1

195.113.89.54

AAAA 1

2001:718:1e03:622::60

MX 2

10ag2.cesnet.cz
10ag1.cesnet.cz

TXT 7

google-site-verification=T4H_GYV-wpMp1W0zdIt62whR5pTIIr9HOSoS75qomrs
v=spf1 ip6:2001:718:1e03:4::16 a:out.ruk.cuni.cz a:dec59.ruk.cuni.cz a:golias.ruk.cuni.cz a:igraine.lfhk.cuni.cz a:office2.cesnet.cz mx:is.cuni.cz include:spf.protection.outlook.com -all
google-site-verification=LazYVCEv9A_edcp-AQV8RBrOcYmEyvoC1t68iOp7tSI
apple-domain-verification=S8ZUNOXpX2OWxGom
google-site-verification=52QIa-wnhi8U3xyitTyH9czyXoo3OkkFbqzAJW7U5HM
v=DMARC1; p=quarantine; sp=none; rua=mailto:postmaster-dmarc@cuni.cz
v=DNSSEC1; (detected)

NS 4

cuce.ruk.cuni.cz
david.ruk.cuni.cz
nsa.ces.net
golias.ruk.cuni.cz

SOA 1

golias.ruk.cuni.cz hostmaster.cuni.cz

CAA 4

issue letsencrypt.org
iodef mailto:tcs@cuni.cz
issue digicert.com
issue harica.gr

TLS Certificates (0)

None.

Subdomains (6)

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 cuni.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_92ba4e35796beae7
Output Hash: 5242a533f8b6d9d32b1f32c10370868b1bfc53a64fdb1dc27ac1745f4366ddaf
Signature: ed25519:ba7a7605947752108d39d8cfe4af33361402b10bb5a2dd83a85cf846158587e261786465478e98512e6161aee71548859a678f3f015e6edc9611e39c28e94003
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

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