CONTINUOUS INTERNET TELEMETRY24H DRIFT1,819 material changesacross 1,315 domains · last 24h · +1,012 vs yesterdayDNS DRIFT27 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT4 domains switched email providertop destination google.comCERT DRIFT4 domains switched issuing CA24hNOW478 curated domains not reachable+56 vs yesterdaySITE ERRORS17,745 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 102,437 sites429 rate-limit / 403 bot-block, a posture signal

pku.edu.cn

Observed Jul 24, 2026, 17:45 UTC (1d 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.
education_expanded
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat pku.edu.cn actually stands on - every host below is a signed observation
pku.edu.cn
A / AAAA
162.105.131.160
unattributedserves the site
NS
DNS2.pku.edu.cnns.pku.edu.cnDNS1.pku.edu.cnDNS3.pku.edu.cn
edu.cnanswers its DNS
MX
mx-pku-edu-cn.icoremail.netgateway.pku.edu.cn
icoremail.net + edu.cnreceives its email

DNS Records

A 1

  • 162.105.131.160

MX 2

  • 5mx-pku-edu-cn.icoremail.net
  • 10gateway.pku.edu.cn

TXT 3

  • _hzos8v1tcdrxo5uk1i5qyl7pnu7w15x
  • v=spf1 ip4:162.105.129.0/24 include:spf.icoremail.net -all
  • v=DMARC1; p=quarantine; sp=reject; fo=1; ruf=mailto:dmarc@pku.edu.cn; rua=mailto:dmarc_report@pku.edu.cn

NS 4

  • DNS2.pku.edu.cn
  • ns.pku.edu.cn
  • DNS1.pku.edu.cn
  • DNS3.pku.edu.cn

SOA 1

  • ns.pku.edu.cn hostmaster.pku.edu.cn

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 pku.edu.cn. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
rcpt_f1864bc6e9094128
Output Hash
762d9d466d678804dcbf71c1dbe81fcab6a6d97b7586b8101f35eaf6dbe4c2e1
Signature
ed25519:2ca9d64e0c6483f156cfacfa12206f88ec2f0761244b19ce15b23569350e30ab452bca5bf5eb20f33305133cf34a7f623fc81fa06e66808fd6e26aee40c39d06
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser