ut.pl
Observed Jul 25, 2026, 08:37 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
Secured byLet's Encrypt
3 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ut.pl actually stands on - every host below is a signed observation
ut.pl
A / AAAA
54.36.175.225
unattributedserves the site
NS
ns3.ut.plns4.ut.pl
ut.planswers its DNS
MX
plserver.ut.pl
ut.plreceives its email
TLS
plserver.ut.pl
Let's Encryptissued its certificate
DNS Records
A 1
54.36.175.225
MX 1
10plserver.ut.pl
TXT 2
v=spf1 ip4:54.36.175.225 ~allv=DMARC1; p=none
NS 2
ns3.ut.plns4.ut.pl
SOA 1
ns3.ut.pl biuro.ut.pl
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
plserver.ut.pl |
C=US, O=Let's Encrypt, CN=YE2 | Fri, 16 Oct 2026 11:19:00 +0000 |
YE2 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
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
rcpt_44ac73d9e4732f53- Output Hash
a9724e1bf22058f0025dd20afbf3fd93f53c7a68f7d4d70d99973e8a065a4d10- Signature
ed25519:f2cca9c0f758d4f3d15a107c72147767c7e17dbdf32b7a17f3143e80c945bd389894b6913ff0f1f25acec2fb5ef1d6c4b7a642784018f72f74fbf8d83d79db02- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast