CONTINUOUS INTERNET TELEMETRY24H DRIFT35,866 material changesacross 35,253 domains · 24h to ~3h ago · -4,994 vs yesterdayNOW561 curated domains not reachablelast probe, steadySITE ERRORS34,470 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,741 sites429 rate-limit / 403 bot-block, a posture signal

useoul.edu

Observed Jul 25, 2026, 17:17 UTC (8d 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
Signed observation on record.
Also usesGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat useoul.edu actually stands on - every host below is a signed observation
useoul.edu
A / AAAA
147.46.10.129
unattributedserves the site
NS
hektor.snu.ac.krercc.snu.ac.kr
ac.kranswers its DNS

DNS Records

A 1

  • 147.46.10.129

TXT 1

  • google-site-verification=OVfX1A56Rdjds6dxX27DB6lANSUIOVvcf3E7vE8RLxQ

NS 2

  • hektor.snu.ac.kr
  • ercc.snu.ac.kr

SOA 1

  • ercc.snu.ac.kr ukihouse.snu.ac.kr

TLS Certificates (0)

None.

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; nothing leaves your machine.

Verify this receipt

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

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

Ed25519 Receipt

Receipt ID
rcpt_e358338bec1596c4
Output Hash
c6c860a4cf35b4940ec99bad9a52b74b4152911ce31b09ca03c57f9055b22013
Signature
ed25519:a3f37fbe12f04050d07be2c385ed510b5faf3c9e7c673725a3bcd98e28bb14c7c1b9ac3a8912e0b2637236890fcb261e1b5cebcf0e4b859fb5ff90c10df26e03
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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