altap.cz
Observed Jul 24, 2026, 08:54 UTC (14h 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
4 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat altap.cz actually stands on - every host below is a signed observation
altap.cz
A / AAAA
217.31.53.26
unattributedserves the site
NS
ns.altap.czns2.ignum.cz
altap.cz + ignum.czanswers its DNS
MX
mail.altap.cz
altap.czreceives its email
TLS
altap.cz
Let's Encryptissued its certificate
DNS Records
A 1
217.31.53.26
MX 1
10mail.altap.cz
TXT 2
v=spf1 mx -allv=DMARC1; p=quarantine; sp=quarantine; aspf=s; pct=100; ruf=mailto:postmaster@altap.cz
NS 2
ns.altap.czns2.ignum.cz
SOA 1
ns.altap.cz root.altap.cz
CAA 1
issue "letsencrypt.org"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
altap.cz |
C=US, O=Let's Encrypt, CN=YR2 | Wed, 16 Sep 2026 03:00:32 +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 (4)
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_f5dc1c80edb0bfcc- Output Hash
d345c84ddaf26b41414f07b8cde8a96c396d9e329fa98154693af17fc7cf00bb- Signature
ed25519:8358f17a3f1fb4805f3f6feba1ce35523411db3648b9673e86580dd7b7f27c23a09df51312a81732e4ea596d7f5d42df067b79b7e0b8d23687c1841351ac0309- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast