grc.org

Last scanned 5h ago; the signed record is unchanged since 19d 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 onRackspace Hosting
Email byMicrosoft 365
Secured byLet's Encrypt
Registered withNetwork Solutions, LLC
Also usesSolarWinds Service DeskGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT

Steady. No change on record for grc.org 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 12

A1NS4MX1TXT5SOA1

TLS certificates 4

Issued byLet's Encrypt
ExpiresThu, 22 Oc (53d)
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_35f0f63f0c3a9e84
Output Hash
da09a539cfeb58ccf5c92ff768b3fc20d4dcc9219166068c853ea1f3883d2294
Signature
ed25519:de826f766cb82bfb9fe6345de35ff8da0a205eed3e39eacb698663d39a59bcbde54f13e45708ed9f638171d7e5458f168bcbc99fb0e45e0671ad2b279c593504
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT25,159 material changesacross 19,886 domains · 24h to ~60m agoROTATION54 domains moved DNS from koaladns.com to magpiedns.com, 53 moved backa rotation loop, not a migration · 24hCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT3 changed registrar24hNOW563 curated domains not reachablelast probe, steadySITE ERRORS18,202 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 80,870 sites429 rate-limit / 403 bot-block, a posture signal