netcologne.de

Observed Jul 24, 2026, 03:09 UTC (8h 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 onNetCologne Gesellschaft fur Telekommunikation mbH

Secured byLet's Encrypt

Also usesMiroGoogle Search Console

IPv6 · 1 subdomain · tranco_10k

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

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

netcologne.de

A / AAAA

213.168.87.272001:4dd0:100:1f00:80:0:12:5

NetCologne Gesellschaft fur Telekommunikation mbHserves the site

ns3.netcologne.dedns-ext.netcologne.dens1.netcologne.dedns.techfak.net+1 more

netcologne.de + techfak.net + moreanswers its DNS

cc-mx1.netcologne.decc-mx4.netcologne.decc-mx3.netcologne.decc-mx2.netcologne.de

netcologne.dereceives its email

TLS

netcologne.de

Let's Encryptissued its certificate

DNS Records

A 1

213.168.87.27

AAAA 1

2001:4dd0:100:1f00:80:0:12:5

MX 4

10cc-mx1.netcologne.de
10cc-mx4.netcologne.de
10cc-mx3.netcologne.de
10cc-mx2.netcologne.de

TXT 5

v=spf1 ip4:89.1.8.0/23 ip6:2001:4dd0:100::/48 ip4:194.8.194.0/24 ip4:81.173.193.0/24 ip4:81.173.194.0/26 ip4:81.173.246.0/24 ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:46.228.134.9/32 ip4:62.146.4.26/32 include:spf.pressfile.de ~all
MS=BDFD7A5ADE83C86F97DF75FD37738FB8BAC068A5
miro-verification=ad0fc33f95902a578bdf8a8403984837bce5736f
google-site-verification=5kVCnNbyhYJeE2zfu4UkCKDluoazefAJCpUY357KK2M
v=DMARC1; p=none; sp=none; fo=1; adkim=r; aspf=r; ruf=mailto:dmarcfor@netcologne.de; rua=mailto:dmarcrec@netcologne.de

NS 5

ns3.netcologne.de
dns-ext.netcologne.de
ns1.netcologne.de
dns.techfak.net
pns.dtag.de

SOA 1

ns1.netcologne.de hostmaster.netcologne.de

TLS Certificates (4)

Common Name	Issuer	Expires
`netcologne.de`	C=US, O=Let's Encrypt, CN=YE2	Sat, 10 Oct 2026 07:02:26 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

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

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

Ed25519 Receipt

Receipt ID: rcpt_5d90ac7a8e9fdf06
Output Hash: 79004fcdcfbd435555f56e8da7b032201028f94c8bcc61acc13760a54c4675c7
Signature: ed25519:ba439a8b1687317a176e9757bf9427a5aa833004b86e90026dc6e66bb4ecd4d97c9430ee6aa6cd798e0a061ed68ca276c913a3d9bee239b3ff5088fba2439908
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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