usenix.org
Observed 2026-07-13T01:22:38.390Z (7h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Also usesFacebook/Meta1PasswordGoogle Search Console
IPv6 · 8 subdomains · tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usenix.org actually stands on - every host below is a signed observation
usenix.org
A / AAAA
172.67.159.52104.21.9.672606:4700:3031::ac43:9f342606:4700:3031::6815:943
Cloudflareserves the site
NS
duke.ns.cloudflare.comamalia.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
alt1.aspmx.l.google.comaspmx.l.google.comaspmx3.googlemail.comalt2.aspmx.l.google.com+1 more
Google Workspacereceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.usenix.org/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time386 ms
DNS resolutionNOERROR
Redirect chain
https://www.usenix.org/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 2
172.67.159.52104.21.9.67
AAAA 2
2606:4700:3031::ac43:9f342606:4700:3031::6815:943
MX 5
5alt1.aspmx.l.google.com1aspmx.l.google.com10aspmx3.googlemail.com5alt2.aspmx.l.google.com5aspmx2.googlemail.com
TXT 12
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~alljamf-site-verification=9jpXV9Kj0zUc4Hmh7xQhBAfacebook-domain-verification=k4ln5v10rpbl30ycqf3adsmx5wdxerMS=ms74434625MS=1C9777014BBA1311A8D73006D88E8171BD2C45F11password-site-verification=A4FZ5FEBIBGCJIZETBURXRBIF4sophos-domain-verification=a57c5be5f56331d9aa0762c379ced2559c2ab6e13189020ae0cd573e06a9ea90MS=ms35918051apple-domain-verification=pMupuJTB7hD1o7CPgoogle-site-verification=NWZh1b4m1muqzcGTUY41ERnLVVU1U0nU1knFu0v-Y5g
NS 2
duke.ns.cloudflare.comamalia.ns.cloudflare.com
SOA 1
amalia.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (0)
None.
Subdomains (8)
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
ae0bd7f8-a7c1-422e-8d78-57d4c67df54f- Output Hash
77fe6c2fd8ab5e83321d110b4fba4a66fd25bf3042ba2c016f4b9c5b39c24239- Signature
ed25519:2e0b149d559001a8040272fd4a039b3b74e57bc6665e6e5f6048d6618921f100ceb7c2419037e930566192e9f99d14c53908d10046887b2e1ace25a57b137402- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast