4fitness.cz

Last scanned 21h ago; the signed record is unchanged since 23d ago. Every field below carries an Ed25519 signature from that last reading. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

Up right now
Secured byLet's Encrypt
Registered withREG-ACTIVE24
Also usesFacebook/Meta
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT

Steady. No change on record for 4fitness.cz in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.

SIGNED-OUT VIEW Provider names, posture and counts are shown. The record values - every DNS answer, each subdomain hostname, raw TXT, IPs, cert names and WHOIS - are the product. Sign in for the full signed record, or use the API with a key.

DNS records 9

A1NS3MX2TXT2SOA1

TLS certificates 4

Issued byLet's Encrypt
ExpiresSun, 06 Se (3d)
Certificate nameswithheld

Subdomains 1

1 subdomain hostname observed and signed - the list itself is part of the paid record.

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; the only network request the check makes is for the published public keys.

Verify this receipt
Ed25519 receiptthe raw cryptographic proof
Receipt ID
rcpt_c65164372aca42f4
Output Hash
d62f30b041de3b3d24cfd58ac93679196b1102aa56954c38c129ff154cd0e003
Signature
ed25519:d6748970cda8a04a92b157841f5753e5c590674195792499cf145fc0ed0b6208376c8b921bc9e882b9357057dd653b754efbdc87cf6989d2ba15caad3d261e02
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT9,332 material changesacross 7,269 domains · last 24h · +1,709 vs yesterdayDNS DRIFT86 domains changed DNS providertop destination koaladns.comCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT3 changed registrar24hNOW616 curated domains not reachablelast probe, steadySITE ERRORS18,187 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 80,374 sites429 rate-limit / 403 bot-block, a posture signal