usef.org
Observed Jul 27, 2026, 15:31 UTC (6d 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
Runs onCloudflare
Secured byGoDaddy.com
Also usesGoogle Search Console
IPv6 · 13 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usef.org actually stands on - every host below is a signed observation
usef.org
A / AAAA
104.18.9.231104.18.8.2312606:4700::6812:9e72606:4700::6812:8e7
Cloudflareserves the site
NS
clay.ns.cloudflare.comtia.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
mx1.hc5400-24.iphmx.commx2.hc5400-24.iphmx.com
iphmx.comreceives its email
TLS
www.usef.org
GoDaddy.comissued its certificate
DNS Records
A 2
104.18.9.231104.18.8.231
AAAA 2
2606:4700::6812:9e72606:4700::6812:8e7
MX 2
10mx1.hc5400-24.iphmx.com10mx2.hc5400-24.iphmx.com
TXT 12
8t3ekqpofk5n6fm0b738pa66fuMS=ms52918994apple-domain-verification=Br96ofqemmBnJa4Jcisco-ci-domain-verification=679d9e4f136e4a47b12d44b559549f2197ca4f9f6fabb7a35793a7460551ec6bgoogle-site-verification=iPonj4U3FwNlc8UUc8CcSK2g83uJ3dsMXmArz6cfGi8google-site-verification=lbt0xTe7v6X20o3i12-T7G7hG2YtTehe6wgd4TjVkqwgoogle-site-verification=xxMfeEDGtAInJGR7ARCsNcZbgoceeQ4P0-0T3RDDzBginu4r6p64ptaogadthej9v2ljems-domain-verification=b0d2ff7e-9153-40cc-a0ce-8583aac23162v=spf1 include:spf.protection.outlook.com exists:%{i}.spf.hc5400-24.iphmx.com ip4:139.138.59.212 ip4:139.138.35.88 ip4:216.170.20.137 ip4:216.170.20.135 ~all
NS 2
clay.ns.cloudflare.comtia.ns.cloudflare.com
SOA 1
clay.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.usef.org |
C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., 2.5.4.11=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2 | Sun, 22 Nov 2026 18:42:28 +0000 |
Go Daddy Secure Certificate Authority - G2 |
C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., CN=Go Daddy Root Certificate Authority - G2 | Sat, 03 May 2031 07:00:00 +0000 |
Go Daddy Root Certificate Authority - G2 |
C=US, O=The Go Daddy Group, Inc., 2.5.4.11=Go Daddy Class 2 Certification Authority | Fri, 30 May 2031 07:00:00 +0000 |
Subdomains (13)
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_9e525df92e13ffd2- Output Hash
84451360aefc4e7f38fc13583b1d0f9aad6a640333a82f9632cf301936f785a5- Signature
ed25519:f6324ee61300f8ca30b3822530bd06a185917f06e6296e0421bbfaa39b81c301a837d64e90cc68a1f4a1d92a75a1e2f331eb05875935c84c46f74ab0e92fd401- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast