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 sinna.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sinna.fr
- Valid from
- Jun 2, 2026
- Valid until
- Aug 31, 2026 (40 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05AA55372894BFA0124670D7751860E1951A
- SHA-256 fingerprint
- 88:3B:EA:4F:54:92:41:42:86:64:C4:F4:22:C3:0C:9A:E3:A7:8A:3B:AE:49:43:BA:64:14:EA:D0:0D:6E:F5:A9
- 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.