SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for zapa-beton.cz

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
zapa.cz
Valid from
Jun 27, 2026
Valid until
Sep 25, 2026 (66 days remaining)
Public key
RSA 2048-bit
Serial
05CB9AF4FE5BD9F6D61AF9C2161DAD4124E4
SHA-256 fingerprint
54:F5:B9:45:0D:5C:F5:43:DF:DF:C5:77:72:1A:6F:0D:07:20:61:46:9B:84:9A:7A:C7:6F:EE:03:4A:13:69:92
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
www.zapa.cz, zapa.cz

Certificate Authority Authorization (CAA)

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