defcon.org

Observed Jul 24, 2026, 01:22 UTC (12h 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

Up right now

Runs onComcast Cable Communications

Secured byHellenic Academic and Research Institutions CA

Registered withGandi SAS

Also usesGoogle Search Console

IPv6 · 3 subdomains · tranco_100k

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

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

defcon.org

A / AAAA

50.230.231.782001:559:327:231::78

Comcast Cable Communicationsserves the site

dns-1.datamerica.comdns-3.datamerica.com

datamerica.comanswers its DNS

mail-1.datamerica.commail-2.datamerica.com

datamerica.comreceives its email

TLS

defcon.org

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

50.230.231.78

AAAA 1

2001:559:327:231::78

MX 2

10mail-1.datamerica.com
20mail-2.datamerica.com

TXT 6

security_contact=mailto:security@defcon.org
v=spf1 a:mail-1.datamerica.com a:mail-2.datamerica.com -all
google-site-verification=d5Wqya3G077LcmFPN-VE5ZqQJxXCqKTgSkU1ATIJBks
security_policy=https://defcon.org/html/links/disclosure-policy.html
v=DMARC1; p=quarantine; aspf=r; adkim=r; fo=1; rf=afrf; ri=86400; pct=100; ruf=mailto:postmaster@defcon.org!7m; rua=mailto:postmaster@defcon.org!7m
v=STSv1; id=2019042001;

NS 2

dns-1.datamerica.com
dns-3.datamerica.com

SOA 1

dns-1.datamerica.com hostmaster.defcon.org

CAA 1

issue "harica.gr"

TLS Certificates (3)

Common Name	Issuer	Expires
`defcon.org`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA DV TLS ECC	Wed, 03 Mar 2027 06:06:05 +0000
`HARICA DV TLS ECC`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS ECC Root CA 2021	Sat, 15 Mar 2036 09:22:32 +0000
`HARICA TLS ECC Root CA 2021`	C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions ECC RootCA 2015	Fri, 31 Aug 2029 07:44:36 +0000

Subdomains (3)

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

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

Ed25519 Receipt

Receipt ID: rcpt_b2568743dcececec
Output Hash: 756e3fef045f8709051c1d2e94705de4b9cd08cddece69839aa9088f9d333345
Signature: ed25519:3fd89ad3793b91e1ce6db93fa5f41fcfb53d022e7942def1ee77c29a2f4d45d965c6ff1c13907f6f1cd951473baf65e3cba0846dfbe74af910b5f35a6f388a01
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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