surf.nl

Last scanned 19h ago; the signed record is unchanged since 36d 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
Runs onSURF B.V
Email byMicrosoft 365
Secured byHellenic Academic and Research Institutions CA
Registered toSURF B.V
Registered withSURF B.V.
Also usesAppleBitwardenGoogle Search ConsoleAdobe
IPv6 · 1 subdomain · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT

Steady. No change on record for surf.nl 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 21

A1AAAA1NS4MX1TXT10CAA3SOA1

TLS certificates 3

Issued byHellenic Academic and Research Institutions CA, Hellenic Academic and Research Institutions Cert. Authority
ExpiresSat, 06 Fe (143d)
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_28d4203ab8c89d3a
Output Hash
191903a6e2044ad49b8063548827472725aa69cba093d33328eb2cde58fadb18
Signature
ed25519:a94edda753906dddda970c2e5bf8b4ba74644c84ad4e6da107b000b6a8bb42501a2504747ccba668c7b4f46f10093cfe013619f5221eda9f97b1cc58d36a7d0d
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT24,880 material changesacross 20,015 domains · 24h to ~2h ago · +15,345 vs yesterdayDNS DRIFT84 domains changed DNS providertop destination koaladns.com · -5 vs yesterdayNOW669 curated domains not reachable+46 vs yesterdaySITE ERRORS17,626 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 79,968 sites429 rate-limit / 403 bot-block, a posture signal