SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dejong.cz
SSL/TLS Certificate
SSL/TLS Certificate for dejong.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dejong.cz
- Valid from
- Jun 8, 2026
- Valid until
- Sep 6, 2026 (47 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06823EC0B0EA9B5E74A0EA01ECAC39E08A9A
- SHA-256 fingerprint
- 21:32:11:63:48:15:13:C3:5E:98:33:7A:B6:E7:D0:8A:38:51:19:D8:1A:69:2A:DD:6B:83:E6:1F:6F:EB:D1:E3
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.