~/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 227 more days.
── output ─────
- Issued to
- www.spiegel.de
- Issued by
- GeoTrust TLS RSA CA G1
- Valid from
- 2025-12-05
- Valid until
- 2026-12-04 (227 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
- 8B:A5:5E:8A:B3:EB:52:5F:17:DA:CE:A3:A0:DF:40:3A:88:07:40:42:AD:63:C8:63:35:C7:34:3D:16:CD:B4:09
- Serial
- 058FF94256D70F4E44D931F73F3C10C1
subject_alt_names · 3
www.spiegel.de
spiegel.de
prod.www.spiegel.de
certificate_chain · 2 certs
[ leaf ]www.spiegel.de
227 days left
issuer: GeoTrust TLS RSA CA G1
2025-12-05 → 2026-12-04
[ inter ]GeoTrust TLS RSA CA G1
559 days left
issuer: DigiCert Global Root G2
2017-11-02 → 2027-11-02