domjudge.org

Observed Jul 29, 2026, 15:51 UTC (4h 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

INFRASTRUCTURE MAPwhat domjudge.org actually stands on - every host below is a signed observation

domjudge.org

A / AAAA

192.87.110.1012001:610:508:110::c057:6e65

2001serves the site

ns1.zurich.surf.netns1.surfnet.nlns2.surfnet.nlns3.surfnet.nl

surf.net + surfnet.nlanswers its DNS

mx.soverin.net

soverin.netreceives its email

TLS

www.domjudge.org

Let's Encryptissued its certificate

DNS Records

A 1

192.87.110.101

AAAA 1

2001:610:508:110::c057:6e65

MX 1

10mx.soverin.net

TXT 3

SURF=IC8G2td86f9b66Qo
v=spf1 a mx include:soverin.net -all
v=DMARC1; p=none; rua=mailto:iodef@kinkhorst.com, mailto:di6leuvu@ag.eu.dmarcadvisor.com; ruf=mailto:iodef@kinkhorst.com

NS 4

ns1.zurich.surf.net
ns1.surfnet.nl
ns2.surfnet.nl
ns3.surfnet.nl

SOA 1

ns1.surfnet.nl dns-beheer.surf.nl

CAA 1

issue "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`www.domjudge.org`	C=US, O=Let's Encrypt, CN=YR2	Sat, 03 Oct 2026 03:51:15 +0000
`YR2`	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 (2)

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 domjudge.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_8cbccb926cbf4762
Output Hash: 9e6cbb53ea3c022fb42ef5cfe59c7998ac3bbd5904bb76f41e35a07e097c85db
Signature: ed25519:2d19ffdeb618ee970a0427c5a9ce2eb14b8e4bbfdd7637e93c2ac5566692fd5748f288e27f40c638c0ae76b1c7d424ca45a1689b67da5ec77b504f8a8fed1704
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/domjudge.org