atcomp.cz

Observed Jul 24, 2026, 06:32 UTC (16h 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

Secured byDigiCert

Also usesGoogle Search Console

1 subdomain · tranco

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

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

atcomp.cz

A / AAAA

81.30.226.132

unattributedserves the site

ns3.ha-vel.comns2.ha-vel.czns6.atcomp.cz

ha-vel.com + ha-vel.cz + moreanswers its DNS

mx5.atcomp.czmx3.atcomp.cz

atcomp.czreceives its email

TLS

www.atcomp.cz

DigiCert Incissued its certificate

DNS Records

A 1

81.30.226.132

MX 2

10mx5.atcomp.cz
20mx3.atcomp.cz

TXT 7

apple-domain-verification=6Pi8IoC04IrjNA4b
google-site-verification=qMYcYDmUjKOtWF6vY7MfaN5HppsT5oVwFI6Flf2djs0
MS=ms80993070
cisco-ci-domain-verification=599c8a7e0204b775b881095aaf0453bdaa25358054552b56b71c7e9f22bd5443
v=spf1 ip4:81.30.228.34 ip4:193.85.25.25 include:spf.smartemailing.cz include:spf.protection.outlook.com a mx ~all
MS=C0D7EABD1BBEE7A268113A0FBDA597D6A5ADEE47
v=DMARC1; p=none; rua=mailto:dmarc+10068@smartemailing.cz; fo=1; aspf=r

NS 3

ns3.ha-vel.com
ns2.ha-vel.cz
ns6.atcomp.cz

SOA 1

ns6.atcomp.cz hostmaster.atcomp.cz

SRV 1

mx1.atcomp.cz:443 p0

TLS Certificates (2)

Common Name	Issuer	Expires
`www.atcomp.cz`	C=US, O=DigiCert Inc, CN=DigiCert EV RSA CA G2	Tue, 22 Dec 2026 23:59:59 +0000
`DigiCert EV RSA CA G2`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Tue, 02 Jul 2030 12:42:50 +0000

Subdomains (1)

www.atcomp.cz

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

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

Ed25519 Receipt

Receipt ID: rcpt_0521f630c4581e4c
Output Hash: 2cbd2e1b8aef6a0edb44bae627f69dfbf58c54739d5e56953a7f56da5ddd6029
Signature: ed25519:a523c2828a90c6b7b2ea31422417af3449f58f0174f691f941ae453bdaaf69d4feb7a27fc1ff2ad9b161d8c8a5b30891705dfd3626449864af5287bb224b340e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/atcomp.cz