~/tools / ssl-checker

SSL Checker

Check SSL certificate expiry, chain validity, TLS version and cipher. Catches expired certs, weak crypto and chain issues.

[ OK ] Valid for 273 more days.

── output ─────

Issued to: lcl.fr
Issued by: Sectigo Public Server Authentication CA OV R36
Valid from: 2026-01-19
Valid until: 2027-01-19 (273 days)
TLS version: TLSv1.3
Cipher: TLS_AES_256_GCM_SHA384
Key: RSA · 2048 bit
Signature: sha256WithRSAEncryption
Forward secrecy: yes
Self-signed: no
Must-staple: no
SHA-256 fingerprint: 55:BA:CD:E5:D2:20:69:0D:78:4B:16:AD:A2:45:3A:A1:86:38:21:53:98:2E:A7:15:3F:4E:DD:ED:BC:5C:BD:17
Serial: 468F142573C2407FB2083833601A645D

subject_alt_names · 1

lcl.fr

certificate_chain · 2 certs

[ leaf ]lcl.fr

273 days left

issuer: Sectigo Public Server Authentication CA OV R36

2026-01-19 → 2027-01-19

[ inter ]Sectigo Public Server Authentication CA OV R36

3622 days left

issuer: Sectigo Public Server Authentication Root R46

2021-03-22 → 2036-03-21

// Save lcl.fr → we'll run this daily and alert on changes. /signup →