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 merum.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.merum.cz
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (52 days remaining)
- Public key
- EC 256-bit
- Serial
- 050707784C16FA4D757F64AF6D21BA647494
- SHA-256 fingerprint
- 9F:B8:CC:A3:63:70:B8:8D:FD:1D:D8:A1:DA:CB:E8:00:01:52:C5:02:64:FB:2C:34:86:82:B4:F8:74:28:D4:92
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.