usd.ai
Observed Aug 2, 2026, 09:52 UTC (22h 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 byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usd.ai actually stands on - every host below is a signed observation
usd.ai
A / AAAA
216.150.1.129216.150.1.193
unattributedserves the site
NS
ns1.vercel-dns.comns2.vercel-dns.com
vercel-dns.comanswers its DNS
MX
smtp.google.com
Google Workspacereceives its email
TLS
*.usd.ai
Let's Encryptissued its certificate
DNS Records
A 2
216.150.1.129216.150.1.193
MX 1
1smtp.google.com
TXT 4
google-site-verification=Bhjpzz8Ypgzlgc_r0tcX0cBrQkj8NgnhUHB-BfDlfsAgoogle-site-verification=c4dhsanfb0gA6SS-eIkj4gfWOnI1d0OmRz1VerVziH8klaviyo-site-verification=Sk2e8yv=spf1 include:_spf.google.com ~all
NS 2
ns1.vercel-dns.comns2.vercel-dns.com
SOA 1
ns1.vercel-dns.com hostmaster.nsone.net
CAA 3
issue "letsencrypt.org"issue "pki.goog"issue "sectigo.com"
DMARC_RECORDS 1
v=DMARC1; p=quarantine; rua=mailto:dmarc@usd.ai
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.usd.ai |
C=US, O=Let's Encrypt, CN=YR2 | Thu, 15 Oct 2026 02:28:34 +0000 |
YR2 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (0)
None observed.
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_4bf323039889fd01- Output Hash
02d3913a2a358e5cf89c6d6cef6c0d75a8d2fe1caba8788dfa18ccb73f6b31fb- Signature
ed25519:bbb9a00282409eaad7a700325f7e88cabd51682f8cd2ed43363e1db9ccae0034732bebaf033dd65280aa01e03721df24172f7ea4c6ba384c3c41fafed2b31308- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast