shef.ac.uk

Last scanned 19h ago; the signed record is unchanged since 10d 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 onJisc Services Limited
Email byGoogle Workspace
Secured bySectigo
Also usesGoogle Search ConsoleQuoVadis (DigiCert)Apple
tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT

Steady. No change on record for shef.ac.uk 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 30

A1NS3MX5TXT6CAA9SRV5SOA1

TLS certificates 3

Issued bySectigo
ExpiresWed, 02 De (104d)
Certificate nameswithheld

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

Verify this receipt
Ed25519 receiptthe raw cryptographic proof
Receipt ID
rcpt_bb35f6c79a7ce7e2
Output Hash
d34db015b41e62455271969ac2d0e4487bec9e7539256e5672dedf9e12adaefd
Signature
ed25519:3e6637292286404d2474f1710a282ef12da63a3212dff9a084beec76d4c2cd5b30d235431d7431bc720ac1f80aa0ad5b73ac2a9c7de9dc39a4d0426821efa10c
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT15,182 material changesacross 11,482 domains · 24h to ~9h ago · +8,520 vs yesterdayROTATION61 domains moved DNS from magpiedns.com to koaladns.com, 57 moved backa rotation loop, not a migration · 24hREGISTRAR DRIFT1 changed registrar24hNOW161 curated domains not reachable+41 vs yesterdaySITE ERRORS17,788 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 78,122 sites429 rate-limit / 403 bot-block, a posture signal