koeln.de

Observed Jul 17, 2026, 15:22 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Secured byAsseco Data Systems S.A.

tranco_100k

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

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

koeln.de

A / AAAA

81.173.246.122

unattributedserves the site

dns14.netcologne.dedns12.netcologne.dedns11.netcologne.dedns13.netcologne.de

netcologne.deanswers its DNS

mailin.koeln.desecondary.snafu.de

koeln.de + snafu.dereceives its email

TLS

*.koeln.de

Asseco Data Systems S.A.issued its certificate

DNS Records

A 1

81.173.246.122

MX 2

10mailin.koeln.de
50secondary.snafu.de

TXT 2

v=spf1 include:_spf1.snafu.de include:_spf2.snafu.de include:netcologne.de ~all
MS=7FA3943A71F70FF079394B0F769D52A53679AC71

NS 4

dns14.netcologne.de
dns12.netcologne.de
dns11.netcologne.de
dns13.netcologne.de

SOA 1

dns11.netcologne.de hostmaster.routing.net

SRV 1

autodiscover.koeln.de:443 p0

TLS Certificates (2)

Common Name	Issuer	Expires
`*.koeln.de`	C=PL, O=Asseco Data Systems S.A., CN=Certum DV TLS G2 R39 CA	Sat, 03 Apr 2027 14:55:10 +0000
`Certum DV TLS G2 R39 CA`	C=PL, O=Asseco Data Systems S.A., 2.5.4.11=Certum Certification Authority, CN=Certum Trusted Root CA	Sun, 05 Jun 2039 07:41:22 +0000

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

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

Ed25519 Receipt

Receipt ID: d2e8f646-b807-41a4-a1ed-16fad296c438
Output Hash: 1c41b1b425357bcf6cc9cf5e819d28378776d35b9b942a865bfae415f1f10197
Signature: ed25519:0309642434b32579eab813ff252f1b71e4139bd50d451d59c4b8ca94a7ae9152e8e50b6c3b0e90eaa0ecd530f16c0e852732a141f739199e7cd79c08da16fe0b
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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