SSL/TLS Certificate Lookup

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

ondrafyzio.cz

SSL/TLS Certificate

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SSL/TLS Certificate for ondrafyzio.cz

Expiring soon
Issued by (CA)
Let's Encrypt
Subject
ondrafyzio.cz
Valid from
May 12, 2026
Valid until
Aug 10, 2026 (20 days remaining)
Public key
RSA 2048-bit
Serial
05F3B5F7C2E89816311F4F168B4B1E65F556
SHA-256 fingerprint
C4:9C:41:42:C9:CA:DD:B1:8E:3F:D0:08:6C:62:7B:A3:47:E8:5B:C9:99:3D:BC:71:E0:34:A8:9E:41:74:B7:39
Chain
R12 → ISRG Root X1
Subject Alternative Names (2)
ondrafyzio.cz, www.ondrafyzio.cz

Certificate Authority Authorization (CAA)

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