posteo.de

Observed 2026-07-13T01:52:02.633Z (18h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

IPv6 · 5 subdomains · tranco_20k

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

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

posteo.de

A / AAAA

185.67.36.168185.67.36.1692a05:bc0:1000::169:12a05:bc0:1000::168:1

Cloudflareserves the site

nordic.excedodns.netns01.posteo-dns.deworld.excedodns.orgns02.posteo-dns.de+5 more

excedodns.net + posteo-dns.de + moreanswers its DNS

mx02.posteo.demx01.posteo.demx03.posteo.demx04.posteo.de

posteo.dereceives its email

HTTPS probe

redirect Redirecting (3xx) 302 → https://posteo.de/en

HTTP status302

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1755 ms

DNS resolutionNOERROR

Redirect chain

https://posteo.de/en

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

DNS Records

A 2

185.67.36.168
185.67.36.169

AAAA 2

2a05:bc0:1000::169:1
2a05:bc0:1000::168:1

MX 4

10mx02.posteo.de
10mx01.posteo.de
10mx03.posteo.de
10mx04.posteo.de

TXT 6

84944eaf2fa3496cc8b73383c39b0046330432b19e3400ce8c21052b09194db
v=spf1 ip4:185.67.36.0/23 ip6:2a05:bc0:1000::/47 ~all
e09403217652a8ddff5c9587701e02f9d12b226b6523bcf247aee481d00b4b1
v=DMARC1; p=none; sp=quarantine; adkim=s; aspf=s
v=STSv1; id=20251202110430Z
v=DNSSEC1; (detected)

NS 9

nordic.excedodns.net
ns01.posteo-dns.de
world.excedodns.org
ns02.posteo-dns.de
sto.excedodns.se
global.excedodns.com
emea.excedodns.eu
ns31.posteo-dns.eu
ns21.posteo-dns.ch

SOA 1

ns01.posteo-dns.de hostmaster.posteo.de

CAA 6

issue certum.pl
issue geotrust.com
iodef mailto:hostmaster@posteo.de
issuewild geotrust.com
issue d-trust.net
issuewild d-trust.net

TLS Certificates (0)

None.

Subdomains (5)

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

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

Ed25519 Receipt

Receipt ID: 6c167271-82b4-412d-a3a2-1ea010c4de6e
Output Hash: 799518317270ca2269dea4b5c0e95c71bc9c7e209fdd1dca8f83b17e0b00146f
Signature: ed25519:d795ebe1e1504ddf85bef96f2440fee3be95efe282c22c719f815f40510a4bedc1ebfd1e84153ceda1554652651fbb1a5194443000933ec49bf31083ab099f0e
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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