SSL/TLS Certificate Lookup

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

komplex.cz

SSL/TLS Certificate

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SSL/TLS Certificate for komplex.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
www.komplex.cz
Valid from
Jun 5, 2026
Valid until
Sep 3, 2026 (43 days remaining)
Public key
RSA 2048-bit
Serial
06E21115BB08B36AEDB1872032D5539E4565
SHA-256 fingerprint
8A:91:02:4B:B0:01:F7:2E:7F:09:B5:80:CB:C1:41:B8:2E:B8:59:A6:A8:A6:46:12:0D:6E:38:86:38:86:CC:45
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
komplex.cz, www.komplex.cz

Certificate Authority Authorization (CAA)

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