koeln.de

Observed Jul 19, 2026, 19:00 UTC (8h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

13 subdomains · 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

Cloudflareserves the site

dns11.netcologne.dedns13.netcologne.dedns14.netcologne.dedns12.netcologne.de

netcologne.deanswers its DNS

mailin.koeln.desecondary.snafu.de

koeln.de + snafu.dereceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.koeln.de/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time521 ms

DNS resolutionNOERROR

Redirect chain

https://www.koeln.de/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

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

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

SOA 1

dns11.netcologne.de hostmaster.routing.net

TLS Certificates (0)

None.

Subdomains (13)

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: 76ba4975-fad3-4998-8549-381b193d1a16
Output Hash: 2dba23c6e897bca0183a6c848368d129d1dd4884f4220d1f8b4a79f6268627c9
Signature: ed25519:1fb1f2f90caa846ddb8d771c67f38a6cc29b566d1cc0b1aab9da0935b138a5180762918608df8e14204a0e22e7aa5d8b2c8b289e3ecc74311b1810c089b7c400
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

Verify this in your browser

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