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 preca.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- preca.cz
- Valid from
- Jun 30, 2026
- Valid until
- Sep 28, 2026 (68 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F2688B6E48A6B26568F72F842B71B7EE56
- SHA-256 fingerprint
- 1B:FA:DD:29:2F:E6:F0:5F:C2:EA:A4:FB:0E:B3:2B:01:DB:23:7E:72:56:B0:B7:95:96:90:2D:3D:61:79:50:4D
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.