cdu.de

Observed Jul 19, 2026, 15:42 UTC (1h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byBrevo (Sendinblue)

Also usesGoogle Search Console

16 subdomains · tranco_100k

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

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

cdu.de

A / AAAA

193.219.105.10

Cloudflareserves the site

ns2.arcor-ip.dens3.arcor-ip.dens1.cdu.dens1.arcor-ip.de

arcor-ip.de + cdu.deanswers its DNS

mail48.cdu.de

Brevo (Sendinblue)receives its email

HTTPS probe

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

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time949 ms

DNS resolutionNOERROR

Redirect chain

https://www.cdu.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

193.219.105.10

MX 1

5mail48.cdu.de

TXT 12

Sendinblue-code:aa2789879467a12bc6861a37ecf4889f
apple-domain-verification=3SPyxSh5Gir4W3lC
NEcqxLZkjZv1JyFpDjTNF/wvWupIQoimBc6Gc+5SbtwxiXS/DOATFriP+92cb9SB4t9ZwSRS7aaXbPLqZzFnlg==
cisco-ci-domain-verification=10a6638c06922ff7bf5c73c9899e3e6517bce78ae01ebb8f7892f319ab8c07d6
google-site-verification=uPtRpymmuYjbZQ1Lmr2a1gAdJuAGrEHOKCgG22YJNYA
google-site-verification=HxwmL2DD8zzNOeUQ4xOvXuYGwDJ6xM0Ws9eckrztXVw
google-site-verification=5VKRrUmBgFVF-szaRCFv4S0c4pajeEcqTBqvVSkNjlk
google-site-verification=GyUpyOQVmh5n3HahHS97DHNVkwwfaagmy9WKenpTEg8
MS=ms73549048
MS=ms80140043

NS 4

ns2.arcor-ip.de
ns3.arcor-ip.de
ns1.cdu.de
ns1.arcor-ip.de

SOA 1

ns1.cdu.de root.ns1.cdu.de

TLS Certificates (0)

None.

Subdomains (16)

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

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

Ed25519 Receipt

Receipt ID: 044a914f-2d14-434d-a3ed-ebb6211bff46
Output Hash: 42005c200354273af81221ccf2251aebf1d611b8afabe57b4bc6b36a6214b42f
Signature: ed25519:b64c66c2ea19fb7ef300f243819ff7d66497eb5a6dd20b87969ee26db7cd9e67acbef430d028d620ec03b89af1547bdcf2e1cf58eafb5b4543f4e55e9be32208
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

Verify this in your browser

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