arcf.org
Observed Jul 28, 2026, 07:13 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.
Up right now
Email byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat arcf.org actually stands on - every host below is a signed observation
arcf.org
A / AAAA
167.99.159.95
unattributedserves the site
NS
ns91.worldnic.comns92.worldnic.com
worldnic.comanswers its DNS
MX
arcf-org.mail.protection.outlook.com
Microsoft 365receives its email
TLS
www.arcf.org
Let's Encryptissued its certificate
DNS Records
A 1
167.99.159.95
MX 1
10arcf-org.mail.protection.outlook.com
TXT 2
v=spf1 ip4:149.72.210.191 include:spf.protection.outlook.com -allv=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:rua@arcf.org; ruf=mailto:ruf@arcf.org; sp=reject; ri=84600; pct=100
NS 2
ns91.worldnic.comns92.worldnic.com
SOA 1
NS91.WORLDNIC.COM namehost.WORLDNIC.COM
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
www.arcf.org |
C=US, O=Let's Encrypt, CN=E8 | Sat, 22 Aug 2026 22:33:49 +0000 |
E8 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Fri, 12 Mar 2027 23:59:59 +0000 |
Subdomains (1)
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 receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for arcf.org. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/arcf.org">
<img src="https://domaindrift.io/badge/arcf.org.svg"
width="300" height="64" alt="DomainDrift signed observations for arcf.org">
</a>
Ed25519 Receipt
- Receipt ID
rcpt_be02041e10f6e206- Output Hash
efcbfab5bcb6cfc246e133b10f660abf6cac7e6b44964f6febb84f208d0f18e9- Signature
ed25519:4a6449aeaf1dc9b0bf19bd09bad7a3bfed620a4d62257f537c3d28e3aa553f9a2cf8d811068d0b16f34ace6b680b8df8fd302e9bf29d9ca4c36593fde41efa06- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast