utb.cz

Observed Jul 24, 2026, 19:18 UTC (8d 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 onCESNET z.s.p.o

Email byGoogle (SPF sender)

Secured byHellenic Academic and Research Institutions CA

tranco_100k

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

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

utb.cz

A / AAAA

195.178.88.109

CESNET z.s.p.oserves the site

sun.utb.cznsa.ces.net

utb.cz + ces.netanswers its DNS

smtp-gw.utb.cz

Google (SPF sender)receives its email

TLS

utb.cz

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

195.178.88.109

MX 1

10smtp-gw.utb.cz

TXT 6

amazon-business-verification=2fa4d5ea6ef842e7c28998fdfe557ec9b6630f2b8f826c6cf539ce174074881a
apple-domain-verification=0pRw9w5HbOa1ttUF
projectdiscovery-verification=30d3e3ca57
v=spf1 ip4:195.178.88.0/24 include:spf.protection.outlook.com include:_spf.google.com include:sparkpostmail.com -all
MS=ms39696009
v=DMARC1; p=none; sp=none; adkim=r; aspf=r; fo=0;

NS 2

sun.utb.cz
nsa.ces.net

SOA 1

sun.utb.cz hostmaster.utb.cz

TLS Certificates (3)

Common Name	Issuer	Expires
`utb.cz`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Tue, 01 Dec 2026 10:59:32 +0000
`GEANT TLS RSA 1`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021	Sat, 31 Dec 2039 11:14:59 +0000
`HARICA TLS RSA Root CA 2021`	C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015	Fri, 31 Aug 2029 07:41:54 +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 utb.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_bcfb346b348302fd
Output Hash: b629aaf5a35eec134d146d68670f259255aa1dd6f539eb9e5ed5c7ef6de31a3f
Signature: ed25519:89b3609b8b37a7a18fe987eb91d9f4d4b0ef1e28d16dbcc5c8ab8382560d4dbe177fb7adc37bb9c675798abf904c407f6827e0e5f5d262788b217c77336bc104
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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