sf.edu

Observed Aug 16, 2026, 13:38 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of sf.edu was taken 2d ago

sf.edu is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting sf.edu under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch sf.edu Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Runs onCloudflare
Email byMicrosoft 365
Secured byLet's Encrypt
Also usesAdobeHave I Been PwnedGoogle 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 sf.edu 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 19

A2NS4MX1TXT9SRV2SOA1

TLS certificates 4

Issued byLet's Encrypt
ExpiresFri, 18 Se (30d)
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_28c4b3afe553bb8e
Output Hash
53b30d024c39ae1997c378b6207ddf6d47fac85714c3ace068cfa01bdb4007e6
Signature
ed25519:beacc2a64878f1aabbffc8a736eb735c2122042a68050203f277431fb55606581c28f9471186b887657b374c0e6304fe8adae37b783169e6fec1fd745d73cd08
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT8,148 material changesacross 3,881 domains · 24h to ~2h ago · -33,103 vs yesterdayROTATION76 domains moved DNS from magpiedns.com to kirklanddc.com, 74 moved backa rotation loop, not a migration · 24hNOW19 curated domains not reachable-470 vs yesterdaySITE ERRORS17,717 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 78,947 sites429 rate-limit / 403 bot-block, a posture signal