CONTINUOUS INTERNET TELEMETRY24H DRIFT39,355 material changesacross 37,705 domains · 24h to ~2h ago · -1,505 vs yesterdayNOW553 curated domains not reachablelast probe, steadySITE ERRORS34,563 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,809 sites429 rate-limit / 403 bot-block, a posture signal

zfu.de

Observed Jul 26, 2026, 09:59 UTC (7d 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.

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Up right now
Secured byDeutsche Telekom Security GmbH
1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zfu.de actually stands on - every host below is a signed observation
zfu.de
A / AAAA
93.184.134.149
unattributedserves the site
NS
b.nrw.dea.it.nrwdns.globvill.dec.nrw.de
nrw.de + it.nrw + moreanswers its DNS
MX
93.184.134.149mail.zfu.de
zfu.dereceives its email
TLS
zfu.de
Deutsche Telekom Security GmbHissued its certificate

DNS Records

A 1

  • 93.184.134.149

MX 2

  • 1093.184.134.149
  • 20mail.zfu.de

TXT 1

  • _telesec-domain-validation=341788_2025-10-24_JHEPK2d0FcPOtxLEfZ9ZCwrZXcWuybUq5zbPenM5BNcb68u0jK

NS 4

  • b.nrw.de
  • a.it.nrw
  • dns.globvill.de
  • c.nrw.de

SOA 1

  • a.it.nrw webhosting.it.nrw.de

TLS Certificates (2)

Common NameIssuerExpires
zfu.de C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security ServerID OV Class 2 CA Wed, 28 Oct 2026 23:59:59 +0000
Telekom Security ServerID OV Class 2 CA C=DE, O=T-Systems Enterprise Services GmbH, 2.5.4.11=T-Systems Trust Center, CN=T-TeleSec GlobalRoot Class 2 Mon, 02 Aug 2027 23:59:59 +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; nothing leaves your machine.

Verify this receipt

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

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

Ed25519 Receipt

Receipt ID
rcpt_0df2db9a7d06d29c
Output Hash
357a28c4d576a477d375e85e25c5f8bffadce95c9f36d3b21a90c955f6c060e4
Signature
ed25519:616f908b40fda08127dd660f88f2aa64f91a80b5e4128353715788f19ea601e3f0580af531de8ce1269a7a52702e1a944f74a01022f55ec8a45484d83e5dec07
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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