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.cz20mx2.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 -allgoogle-site-verification=amOcIEsxzVVWvKbmXpmpv5D5qxTuGl2DP8JynhoniQEv=DMARC1; p=quarantine; rua=mailto:easy180095@easydmarc.com,mailto:postmaster@zserver.cz; ruf=mailto:ruf@rep.easydmarc.com,mailto:postmaster@zserver.cz; fo=1v=BIMI1; l=https://www.zserver.cz/zserver_bimi_logo.svg; a=;
NS 2
ns2.zserver.euns1.zserver.cz
SOA 1
ns1.zserver.cz hostmaster.zserver.cz
SRV 1
discover.zserver.cz:443 p1
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
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 receiptEd25519 Receipt
- Receipt ID
rcpt_b5e1ccdb5801058a- Output Hash
07a2fc0fe321e5d130b9868eb3b3ee1262c39b6243e24ae5482cc31c19872e52- Signature
ed25519:28d6624229087444c4d79fb5c6097367791ac12cf1b1b8bac1a941a1c78df6d1728db79a96d2a90517a02f89e8115a7b878d5fa2a0ca297403fd8d61251c3601- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast