ctdo.de

Observed Jul 18, 2026, 14:03 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

IPv6 · 9 subdomains · tranco_40k

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

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

ctdo.de

A / AAAA

195.160.168.32001:67c:275c::ffff:c3a0:a803

Cloudflareserves the site

helium.ns.hetzner.deoxygen.ns.hetzner.comhydrogen.ns.hetzner.com

hetzner.de + hetzner.comanswers its DNS

mail.chaostreff-dortmund.de

chaostreff-dortmund.dereceives its email

HTTPS probe

redirect Redirecting (3xx) 308 → https://www.chaostreff-dortmund.de/

HTTP status308

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1272 ms

DNS resolutionNOERROR

Redirect chain

https://www.chaostreff-dortmund.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

195.160.168.3

AAAA 1

2001:67c:275c::ffff:c3a0:a803

MX 1

10mail.chaostreff-dortmund.de

TXT 2

v=spf1 mx a -all
v=DMARC1; p=reject; rua=mailto:mailauth-reports@chaostreff-dortmund.de

NS 3

helium.ns.hetzner.de
oxygen.ns.hetzner.com
hydrogen.ns.hetzner.com

SOA 1

hydrogen.ns.hetzner.com dns.hetzner.com

TLS Certificates (0)

None.

Subdomains (9)

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

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

Ed25519 Receipt

Receipt ID: bd20675d-43ef-4a8c-ad91-c9ad2b1a593d
Output Hash: 8cab3b04c09eabf056f8d0d7446521572bf72a5d26f5cb9cd0d2c00b530b2244
Signature: ed25519:1fadbdc617474f2555592cf0b5d71618b561a0a393c303d4cfd0cd8bbfdcf166d441708f3504d804e4280d6fcd556d42be9d69afffbafb3b64afd444e86c9a00
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

Verify this in your browser

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