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 cls21.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cls21.fr
- Valid from
- Jul 13, 2026
- Valid until
- Oct 11, 2026 (81 days remaining)
- Public key
- EC 256-bit
- Serial
- 054760A3E2F22FE1725A06C596CF785AC721
- SHA-256 fingerprint
- 2B:A9:03:7F:89:E0:33:1A:FC:E3:5A:32:EF:92:1B:D9:6C:A7:C4:86:2D:AF:98:84:6E:05:C2:B7:94:29:44:20
- Chain
- YE2 → 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.