doulos.at
Observed Jul 28, 2026, 07:54 UTC (1d 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.
Not responding
Email byGoogle Workspace
Secured byLet's Encrypt
16 subdomains · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat doulos.at actually stands on - every host below is a signed observation
doulos.at
A / AAAA
158.255.211.31
unattributedserves the site
NS
b.regfish-ns.netc.regfish-ns.neta.regfish-ns.net
regfish-ns.netanswers its DNS
MX
aspmx3.googlemail.comaspmx5.googlemail.comaspmx2.googlemail.comalt1.aspmx.l.google.com+3 more
Google Workspacereceives its email
TLS
doulos.at
Let's Encryptissued its certificate
DNS Records
A 1
158.255.211.31
MX 7
10aspmx3.googlemail.com10aspmx5.googlemail.com10aspmx2.googlemail.com0alt1.aspmx.l.google.com10aspmx4.googlemail.com5alt2.aspmx.l.google.com1aspmx.l.google.com
TXT 8
v=spf1 include:spf.sendinblue.com mx ~allSendinblue-code:c5e9bbe8425baf4bb3bb86f84b6bfd50Sendinblue-code:c5e9bbe8425baf4bb3bb86f84b6bfd50v=spf1 include:spf.sendinblue.com mx ~allv=spf1 include:spf.sendinblue.com mx ~allSendinblue-code:c5e9bbe8425baf4bb3bb86f84b6bfd50Sendinblue-code:c5e9bbe8425baf4bb3bb86f84b6bfd50v=spf1 include:spf.sendinblue.com mx ~all
NS 3
b.regfish-ns.netc.regfish-ns.neta.regfish-ns.net
SOA 1
a.regfish-ns.net dns.regfish-ns.net
SRV 5
xmpp-server2.l.google.com:5269 p20xmpp-server.l.google.com:5269 p5xmpp-server1.l.google.com:5269 p20xmpp-server3.l.google.com:5269 p20xmpp-server4.l.google.com:5269 p20
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
doulos.at |
C=US, O=Let's Encrypt, CN=YR1 | Wed, 14 Oct 2026 14:07:41 +0000 |
YR1 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
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 receiptEd25519 Receipt
- Receipt ID
rcpt_8d3edc9e9a4dc70f- Output Hash
5f77fb8e8e8d05da5429970ab775c3dbfa71326a7e82e7cbd018c02ec5477514- Signature
ed25519:2189ee79ecba27ab839a8be786e0ec025430fc5c91a857598b674e7477e3798af398d2f1ba432f97dd29532a38e1e56141a446b0539b1492c478b3fb07dfc308- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast