usfi.eu
Observed Jul 27, 2026, 20:08 UTC (5d 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
Secured byLet's Encrypt
1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usfi.eu actually stands on - every host below is a signed observation
usfi.eu
A / AAAA
46.252.144.41
unattributedserves the site
NS
dns3.arubadns.netdns.technorail.comdns4.arubadns.czdns2.technorail.com
arubadns.net + technorail.com + moreanswers its DNS
MX
mx.usfi.eu
usfi.eureceives its email
TLS
www.usfi.eu
Let's Encryptissued its certificate
DNS Records
A 1
46.252.144.41
MX 1
10mx.usfi.eu
TXT 2
v=spf1 include:aruba.it ip4:46.252.144.41 ~allv=DMARC1; p=none; adkim=r; aspf=r;
NS 4
dns3.arubadns.netdns.technorail.comdns4.arubadns.czdns2.technorail.com
SOA 1
dns.technorail.com hostmaster.usfi.eu
SRV 1
autodiscover.aruba.it:443 p0
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
www.usfi.eu |
C=US, O=Let's Encrypt, CN=R13 | Wed, 26 Aug 2026 09:49:22 +0000 |
R13 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Fri, 12 Mar 2027 23:59:59 +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_630fc4c784ab8ba3- Output Hash
c5ce23cc21fb5dd37650c95006c6d6cab2b77d670c3bf71bffd078e603e87854- Signature
ed25519:225dd42af90670b346b75ec5d265ead87dac874ab186ec2721a7420e7420024cb955efd7c32a8f03d5a7f0c5a1320e0afc99dda250afb11cd86d3dc5fe84a90c- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast