~/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 210 more days.
── output ─────
- Issued to
- telegraph.co.uk
- Issued by
- Amazon RSA 2048 M01
- Valid from
- 2025-10-20
- Valid until
- 2026-11-17 (210 days)
- TLS version
- TLSv1.3
- Cipher
- TLS_AES_128_GCM_SHA256
- Key
- RSA · 2048 bit
- Signature
- sha256WithRSAEncryption
- Forward secrecy
- yes
- Self-signed
- no
- Must-staple
- no
- SHA-256 fingerprint
- E4:82:D7:06:81:3F:96:11:6A:D2:64:60:28:DC:C7:78:2A:96:64:C0:9A:13:C2:5A:6E:B8:99:F0:03:89:A4:A6
- Serial
- 0DE95F203063C8EE38347DF6F7679E95
subject_alt_names · 1
telegraph.co.uk
certificate_chain · 3 certs
[ leaf ]telegraph.co.uk
210 days left
issuer: Amazon RSA 2048 M01
2025-10-20 → 2026-11-17
[ inter ]Amazon RSA 2048 M01
1585 days left
issuer: Amazon Root CA 1
2022-08-23 → 2030-08-23
[ inter ]Amazon Root CA 1
4271 days left
issuer: Starfield Services Root Certificate Authority - G2
2015-05-25 → 2037-12-31