bibliotheek.nl

Observed Aug 11, 2026, 04:35 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of bibliotheek.nl was taken 3d ago

bibliotheek.nl is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting bibliotheek.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 bibliotheek.nl Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Email byGoogle Workspace
Secured byHellenic Academic and Research Institutions CA
Also usesMicrosoft 365Google Search Console
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat bibliotheek.nl actually stands on - every host below is a signed observation
bibliotheek.nl
A / AAAA
20.23.2.223
unattributedserves the site
NS
ns1.zurich.surf.netns1.surfnet.nl
surf.net + surfnet.nlanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more
Google Workspacereceives its email
TLS
www.bibliotheek.nl
Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

  • 20.23.2.223

MX 5

  • 10aspmx.l.google.com
  • 20alt1.aspmx.l.google.com
  • 20alt2.aspmx.l.google.com
  • 30aspmx2.googlemail.com
  • 30aspmx3.googlemail.com

TXT 5

  • MS=ms74697337
  • MS=ms75411505
  • HARICA-RsVw4EUEMVvWXrDiLJn
  • v=spf1 redirect=_sj0o01maq.sdmarc.net
  • google-site-verification=6nnAmMNIl9mKJ_VaTy_AYHCPOb-gEAEm8-yHGBeWpJs

NS 2

  • ns1.zurich.surf.net
  • ns1.surfnet.nl

SOA 1

  • ns1-konbib.kb.nl postmaster.kb.nl

CAA 1

  • issue "harica.gr"

DMARC_RECORDS 1

  • v=DMARC1; p=reject; pct=100; rua=mailto:a.j0o01maq@sdmarc.net,mailto:dmarc@smtpeter.com

MTA_STS_RECORDS 1

  • v=STSv1; id=1763565706

TLS Certificates (3)

Common NameIssuerExpires
www.bibliotheek.nl C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS ECC 1 Sat, 06 Feb 2027 13:37:27 +0000
GEANT TLS ECC 1 C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS ECC Root CA 2021 Sat, 31 Dec 2039 11:14:20 +0000
HARICA TLS ECC Root CA 2021 C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions ECC RootCA 2015 Fri, 31 Aug 2029 07:44:36 +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
Output Hash
70036cca0b1059ba364fe9ec15c75ebe35b6bbd109f082fd82549c02e9e502b7
Signature
(receipt not held at this host)
Public Key
connor-fast-v0.14.3
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT43,034 material changesacross 41,146 domains · 24h to ~2h ago · -2,836 vs yesterdayROTATION60 domains moved DNS from koaladns.com to magpiedns.com, 60 moved backa rotation loop, not a migration · 24hCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT2 changed registrar24hNOW494 curated domains not reachablelast probe, steadySITE ERRORS36,309 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 115,700 sites429 rate-limit / 403 bot-block, a posture signal