CONTINUOUS INTERNET TELEMETRY24H DRIFT5,275 material changesacross 4,829 domains · last 24h · -5,140 vs yesterdayDNS DRIFT308 domains changed DNS providertop destination cloudflare.com · -351 vs yesterdayEMAIL DRIFT69 domains switched email providertop destination google.com · -98 vs yesterdayCERT DRIFT102 domains switched issuing CA24h · -117 vs yesterdayNOW499 curated domains not reachable-204 vs yesterdaySITE ERRORS17,319 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 96,540 sites429 rate-limit / 403 bot-block, a posture signal

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.cz
  • 20eb540f8c120068d7.mx2.emailprofi.seznam.cz

TXT 3

  • v=spf1 include:spf.szn.cz ~all
  • google-site-verification=IVGcGYfL1rVi44hGzCIdpRY4SNQ7WIZs5mei9JFtrXI
  • v=DMARC1; p=reject; rua=mailto:abuse@seznam.cz,mailto:dmarc-rua@mailkit.com;

NS 2

  • ams.seznam.cz
  • ans.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 NameIssuerExpires
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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for szn.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
rcpt_c416afaf46caf611
Output Hash
43db77fb4394a7e8e56b5b934c8fbf50294dc40143bd5b3e00ad19db2c01c501
Signature
ed25519:88bea775c5bdf2a7afa93c51de94daefccd21a1e9b099dec201c4d9dd8090bdd6c4109a8270890e15a2f13dea61876c3fcd08a871de1185257578117aa4b2d0f
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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