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 gosw.cz
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.gosw.cz
- Valid from
- Jul 7, 2026
- Valid until
- Oct 5, 2026 (75 days remaining)
- Public key
- EC 256-bit
- Serial
- 05FAACCE4A3A30142DB85DA5D32483B9C8F4
- SHA-256 fingerprint
- 14:E0:B7:BE:8C:15:F5:27:B6:96:09:A4:00:B1:29:81:E4:03:75:25:33:C0:7D:59:28:1F:28:BA:A4:AF:15:49
- 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.