CONTINUOUS INTERNET TELEMETRY24H DRIFT71,617 material changesacross 67,026 domains · last 24h · +37,000 vs yesterdayROTATION57 domains moved DNS from koaladns.com to magpiedns.com, 56 moved backa rotation loop, not a migration · 24hNOW537 curated domains not reachablelast probe, steadySITE ERRORS33,860 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 127,610 sites429 rate-limit / 403 bot-block, a posture signal

ou.nl

Observed Aug 3, 2026, 01:19 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of ou.nl was taken 3d ago

ou.nl is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting ou.nl 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 ou.nl Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Verify this receipt yourself + Watch this domain
Up right now
Email byMicrosoft 365
Secured byHellenic Academic and Research Institutions CA
Registered withOpen Universiteit
Also usesGoogle Search Console
DNSSEC on · 1 subdomain · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ou.nl actually stands on - every host below is a signed observation
ou.nl
A / AAAA
145.20.124.148
unattributedserves the site
NS
ns.ou.nldns.ou.nlns2.ou.nl
ou.nlanswers its DNS
MX
ou-nl.mail.protection.outlook.comrelay.ou.nlmailserv2.ou.nl
Microsoft 365receives its email
TLS
ou.nl
Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

  • 145.20.124.148

MX 3

  • 0ou-nl.mail.protection.outlook.com
  • 10relay.ou.nl
  • 20mailserv2.ou.nl

TXT 10

  • MS=ms81132576
  • HARICA-LAjvqL7c0e5JATZCQL0
  • abuseipdb-verification=Cdp0Mzoj
  • MS=D9FA522DB0A593F330B3C81ADF4B4371B7C388CC
  • d365mktkey=jJ9sqCV2Xujx0xUicyyubd09sSMxyxS80b7VhwKsXKwx
  • ms-domain-verification=5bbde023-f788-4f59-aca9-0c3dc6fc1bd5
  • google-site-verification=qwghcgXEcQ7PDmgOKsNnVjEo2DD583UKdYAKoMUY_zg
  • 4QRKLgYVvy3472d/Nsab+HVbraq0nLSoZxfpcc2GBDkVS0IGoDqn0swseCEEFa79EEuZ4fwRWRkcU9azjEOshw==
  • adobe-idp-site-verification=b509ce18e838a8e9b82da8dcdbb762a5b4322f2b736ec94ae9a5925e3ca9e37b
  • v=spf1 mx ip4:145.20.126.12/31 ip6:2001:610:338:1030::126:12/127 ip4:194.187.45.0/26 include:spf.protection.outlook.com -all

NS 3

  • ns.ou.nl
  • dns.ou.nl
  • ns2.ou.nl

SOA 1

  • dns.ou.nl postmaster.ou.nl

DMARC_RECORDS 1

  • v=DMARC1;p=quarantine;rua=mailto:dmarcreports@ou.nl;ri=7;adkim=s;aspf=r;

TLS Certificates (3)

Common NameIssuerExpires
ou.nl C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1 Sat, 31 Oct 2026 13:43:51 +0000
GEANT TLS RSA 1 C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021 Sat, 31 Dec 2039 11:14:59 +0000
HARICA TLS RSA Root CA 2021 C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015 Fri, 31 Aug 2029 07:41:54 +0000

Subdomains (1)

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 Receipt

Receipt ID
rcpt_0504b7f0057fdc85
Output Hash
b03e9a2a592191424f0950a4f7067d4f3d7e23a9a0d47d8d2e1a667f07f68b47
Signature
ed25519:ba2ff598c84103c9d4bd82df76fa79e88ac637429857a5db54f4970099d231c3b68ca61e5c57d86ef6231f26083072501d095a051d7bb6f33dcc9d3228123607
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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