ust.is
Observed Jul 25, 2026, 17:09 UTC (8d 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 byGlobalSign
Also usesGoogle Search Console
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ust.is actually stands on - every host below is a signed observation
ust.is
A / AAAA
82.221.64.168
unattributedserves the site
NS
dell2.netvistun.isdell.netvistun.is
netvistun.isanswers its DNS
MX
ust-is.mail.protection.outlook.com
Microsoft 365receives its email
TLS
www.ust.is
GlobalSign nv-saissued its certificate
DNS Records
A 1
82.221.64.168
MX 1
10ust-is.mail.protection.outlook.com
TXT 6
MS=ms15812664v=spf1 include:spf.protection.outlook.com ip4:93.95.74.0/24 ip4:157.157.91.134 ip4:157.157.92.82 ip4:94.142.152.5 ip4:93.95.74.93 include:spf.hysing.is -allclientconfig.microsoftonline-p.net.google-site-verification=3cIOxSal95VFSZX1vslt6pxZrI_xJPznPDGdfPj1EhkMS=ms75829658nt4sqglqddbx460qxf7tv7tfz9ttk8ft
NS 2
dell2.netvistun.isdell.netvistun.is
SOA 1
dell.netvistun.is cpanel.premis.is
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
www.ust.is |
C=BE, O=GlobalSign nv-sa, CN=GlobalSign RSA OV SSL CA 2018 | Sat, 15 Aug 2026 14:18:54 +0000 |
GlobalSign RSA OV SSL CA 2018 |
2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign | Tue, 21 Nov 2028 00:00:00 +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 receiptEd25519 Receipt
- Receipt ID
rcpt_fcbe6ddf3236b4c8- Output Hash
813f0ef7a57d0d6d058dd9d1fbcfa27d305ed65328b3193f6f6fc14080cb4ebd- Signature
ed25519:edaded60ceb6b5758e3581167eeb4fdca19ceba462929fdab0d861aaa1fc5783b7b21c21f30b361bfe25910f26971b288f7f1ed53ea61d56ac8cbb2701be430a- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast