szn.cz
Observed Jul 24, 2026, 03:10 UTC (10h 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
Runs onSEZNAM-CZ
Secured byLet's Encrypt
Also usesGoogle Search Console
IPv6 · tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat szn.cz actually stands on - every host below is a signed observation
szn.cz
A / AAAA
77.75.76.332a02:598:2::33
SEZNAM-CZserves the site
NS
ams.seznam.czans.seznam.cz
seznam.czanswers its DNS
MX
eb540f8c120068d7.mx1.emailprofi.seznam.czeb540f8c120068d7.mx2.emailprofi.seznam.cz
seznam.czreceives its email
TLS
szn.cz
Let's Encryptissued its certificate
DNS Records
A 1
77.75.76.33
AAAA 1
2a02:598:2::33
MX 2
10eb540f8c120068d7.mx1.emailprofi.seznam.cz20eb540f8c120068d7.mx2.emailprofi.seznam.cz
TXT 3
v=spf1 include:spf.szn.cz ~allgoogle-site-verification=IVGcGYfL1rVi44hGzCIdpRY4SNQ7WIZs5mei9JFtrXIv=DMARC1; p=reject; rua=mailto:abuse@seznam.cz,mailto:dmarc-rua@mailkit.com;
NS 2
ams.seznam.czans.seznam.cz
SOA 1
ans.seznam.cz hostmaster.seznam.cz
CAA 2
iodef "mailto:abuse-caa@firma.seznam.cz"issue "letsencrypt.org"
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
szn.cz |
C=US, O=Let's Encrypt, CN=YE2 | Mon, 12 Oct 2026 10:17:33 +0000 |
YE2 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +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 receiptEd25519 Receipt
- Receipt ID
rcpt_c416afaf46caf611- Output Hash
43db77fb4394a7e8e56b5b934c8fbf50294dc40143bd5b3e00ad19db2c01c501- Signature
ed25519:88bea775c5bdf2a7afa93c51de94daefccd21a1e9b099dec201c4d9dd8090bdd6c4109a8270890e15a2f13dea61876c3fcd08a871de1185257578117aa4b2d0f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast