CONTINUOUS INTERNET TELEMETRY24H DRIFT2,596 material changesacross 2,102 domains · last 24h · +680 vs yesterdayDNS DRIFT39 domains changed DNS providertop destination cloudflare.com · +9 vs yesterdayEMAIL DRIFT8 domains switched email providertop destination google.comCERT DRIFT7 domains switched issuing CA24hNOW510 curated domains not reachable+31 vs yesterdaySITE ERRORS26,517 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 131,877 sites429 rate-limit / 403 bot-block, a posture signal

knu.ac.kr

Observed Jul 24, 2026, 19:28 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Not responding
Email byGoogle (SPF sender)
Also usesGoogle Search Console
tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.

No payload stored for this observation.

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; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for knu.ac.kr. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for knu.ac.kr <a href="https://domaindrift.io/t/knu.ac.kr"> <img src="https://domaindrift.io/badge/knu.ac.kr.svg" width="300" height="64" alt="DomainDrift signed observations for knu.ac.kr"> </a>

Ed25519 Receipt

Receipt ID
rcpt_7122b928657bf218
Output Hash
bdf95d9dea52dd0599d99d6400a0fe3578096aee2def5e8bbc5eaf3468a1fd98
Signature
ed25519:ca17772d85e4a2c9915dde62ddbd0b0c267d0f10e506b4272448d8cbb5f18382884e0de6590954caf8c252f1e1409d9ddefd6e81922ea752daaacc5219c5a10b
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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