SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

raytra.cz

SSL/TLS Certificate

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SSL/TLS Certificate for raytra.cz

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
www.0oo1.cz
Valid from
Jul 17, 2026
Valid until
Oct 15, 2026 (87 days remaining)
Public key
RSA 2048-bit
Serial
05C0A8802CE0672F4A5770937A950B6AF907
SHA-256 fingerprint
48:06:69:02:0D:CB:25:9B:37:5D:E7:7C:8B:86:0A:07:DA:2D:59:41:F9:AC:8B:7F:0C:51:6A:51:73:70:C6:D9
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
0oo1.cz, www.0oo1.cz

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.