CONTINUOUS INTERNET TELEMETRY24H DRIFTat least 31,744 material changesacross 31,201+ domains · 24h to ~7h ago · a floor, 17h of 24 walkedNOW561 curated domains not reachablelast probe, steadySITE ERRORS34,258 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,510 sites429 rate-limit / 403 bot-block, a posture signal

zserver.cz

Observed Jul 27, 2026, 14:29 UTC (6d 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.

Up right now
Secured byLet's Encrypt
Also usesGoogle Search Console
IPv6 · 3 subdomains · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zserver.cz actually stands on - every host below is a signed observation
zserver.cz
A / AAAA
94.23.174.842001:41d0:c:f95::2010
2001serves the site
NS
ns2.zserver.euns1.zserver.cz
zserver.eu + zserver.czanswers its DNS
MX
mx1.zserver.czmx2.zserver.eu
zserver.cz + zserver.eureceives its email
TLS
www.zserver.eu
Let's Encryptissued its certificate

DNS Records

A 1

  • 94.23.174.84

AAAA 1

  • 2001:41d0:c:f95::2010

MX 2

  • 10mx1.zserver.cz
  • 20mx2.zserver.eu

TXT 4

  • v=spf1 mx a ip4:193.165.180.254 ip4:84.242.69.2 ip4:83.208.137.247 ip4:77.78.104.121 ip4:90.177.210.109 ip4:164.132.69.185 include:spf.zserver.cz -all
  • google-site-verification=amOcIEsxzVVWvKbmXpmpv5D5qxTuGl2DP8JynhoniQE
  • v=DMARC1; p=quarantine; rua=mailto:easy180095@easydmarc.com,mailto:postmaster@zserver.cz; ruf=mailto:ruf@rep.easydmarc.com,mailto:postmaster@zserver.cz; fo=1
  • v=BIMI1; l=https://www.zserver.cz/zserver_bimi_logo.svg; a=;

NS 2

  • ns2.zserver.eu
  • ns1.zserver.cz

SOA 1

  • ns1.zserver.cz hostmaster.zserver.cz

SRV 1

  • discover.zserver.cz:443 p1

TLS Certificates (2)

Common NameIssuerExpires
www.zserver.eu C=US, O=Let's Encrypt, CN=R13 Tue, 11 Aug 2026 08:19:49 +0000
R13 C=US, O=Internet Security Research Group, CN=ISRG Root X1 Fri, 12 Mar 2027 23:59:59 +0000

Subdomains (3)

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

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

Ed25519 Receipt

Receipt ID
rcpt_b5e1ccdb5801058a
Output Hash
07a2fc0fe321e5d130b9868eb3b3ee1262c39b6243e24ae5482cc31c19872e52
Signature
ed25519:28d6624229087444c4d79fb5c6097367791ac12cf1b1b8bac1a941a1c78df6d1728db79a96d2a90517a02f89e8115a7b878d5fa2a0ca297403fd8d61251c3601
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser