usb.org
Observed 2026-07-12T13:24:12.677Z (1d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
IPv6 · 3 subdomains · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usb.org actually stands on - every host below is a signed observation
usb.org
A / AAAA
172.67.71.145104.26.3.75104.26.2.752606:4700:20::681a:24b+2 more
Cloudflareserves the site
NS
dave.ns.cloudflare.comserena.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
d162523b.ess.barracudanetworks.comd162523a.ess.barracudanetworks.com
barracudanetworks.comreceives its email
HTTPS probe
ok
Responding normally (2xx) 200 OK
HTTP status200
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time78 ms
DNS resolutionNOERROR
Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 3
172.67.71.145104.26.3.75104.26.2.75
AAAA 3
2606:4700:20::681a:24b2606:4700:20::681a:34b2606:4700:20::ac43:4791
MX 2
20d162523b.ess.barracudanetworks.com10d162523a.ess.barracudanetworks.com
TXT 2
v=spf1 ip4:35.165.55.240 ip4:50.76.103.53 ip4:50.201.23.206 ip4:69.160.44.10 ip4:50.201.25.89 ip4:50.201.25.77 ip4:54.148.241.204 ip4:50.201.25.72 include:spf.protection.outlook.com include:_spf1.causewaynow.com ~allv=DMARC1; p=none; rua=mailto:dmarc-report@usb.org
NS 2
dave.ns.cloudflare.comserena.ns.cloudflare.com
SOA 1
dave.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (0)
None.
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 receiptEd25519 Receipt
- Receipt ID
2f0d2e3d-bc6f-4dad-b143-77d28e12ef7e- Output Hash
50b93d01a5e62b82e68f5dc8897c7973ebab53aabdf0ff052c9715abea13667c- Signature
ed25519:d98f1a00037dc3b224156b01371e50f9cd1c42c255bc3a154ecb70057f4ce869e3ca4d4a0756fc00943cde953b8f79246cbe5858921fceba099a374425486b07- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast