zkm.de

Observed Jul 28, 2026, 18:05 UTC (13h 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.

Verify this receipt yourself + Watch this domain

Up right now

Runs onUniversitaet Stuttgart

Email byMailgun

Secured byHellenic Academic and Research Institutions CA

Also usesGoogle Search Console

1 subdomain · tranco_100k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat zkm.de actually stands on - every host below is a signed observation

zkm.de

A / AAAA

193.197.168.188

Universitaet Stuttgartserves the site

infoblox.zkm.dedns.zkm.dedns3.belwue.dedns1.belwue.de

zkm.de + belwue.deanswers its DNS

a1431.mx.srv.dfn.defortimail.zkm.dec1431.mx.srv.dfn.deb1431.mx.srv.dfn.de

Mailgunreceives its email

TLS

zkm.de

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

193.197.168.188

MX 4

30a1431.mx.srv.dfn.de
20fortimail.zkm.de
30c1431.mx.srv.dfn.de
30b1431.mx.srv.dfn.de

TXT 5

google-site-verification=dfBtFSTRo66eUH0dc-sNg4bgbntbz6XMYMtltsq0VNk
bw=uqDW9nAlzCDNMWAcBdwFxqxDG8NQwsy8XYnJky3DDDSz
v=spf1 ip4:193.197.168.0/22 ip4:193.197.172.0/24 ip4:54.246.220.150 ip4:54.246.224.90 ip4:208.91.114.151 include:_spf.rexx-suite.com include:mailgun.org ~all
apple-domain-verification=cAkT3PrPl281VWdI
v=DMARC1; p=none;

NS 4

infoblox.zkm.de
dns.zkm.de
dns3.belwue.de
dns1.belwue.de

SOA 1

infoblox.zkm.de hostmaster.zkm.de

TLS Certificates (3)

Common Name	Issuer	Expires
`zkm.de`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Wed, 30 Dec 2026 10:12:33 +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)

www.zkm.de

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 zkm.de. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_afd4e84db58a250a
Output Hash: dacba88afdc13028b2187cbe2e09dac04b982bb88789a40b7b4122059c687585
Signature: ed25519:5ba6b554b07af7b781dd1df4b67b0691cf8f256e6d90d330f179aed0bea9db9505c703523068748d5c236e9437d4eb9497b534a1d303dc7ebfb08f4e797ae801
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/zkm.de