~/tools / ssl-checker

SSL Checker

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

[ WARNING ] Expires in 19 days. Schedule renewal.

── output ─────

Issued to: *.sueddeutsche.de
Issued by: Thawte TLS RSA CA G1
Valid from: 2025-04-11
Valid until: 2026-05-12 (19 days)
TLS version: TLSv1.3
Cipher: TLS_CHACHA20_POLY1305_SHA256
Key: RSA · 2048 bit
Signature: sha256WithRSAEncryption
Forward secrecy: yes
Self-signed: no
Must-staple: no
SHA-256 fingerprint: 1A:B1:71:F4:07:84:23:9B:C0:BC:AB:EC:45:C7:BA:10:FB:B8:8D:F0:2B:08:FD:17:A6:1D:E1:4C:CB:CE:E6:B4
Serial: 0B0F156D02FC2964AE7E69559333B545

subject_alt_names · 2

*.sueddeutsche.de sueddeutsche.de

certificate_chain · 2 certs

[ leaf ]*.sueddeutsche.de

19 days left

issuer: Thawte TLS RSA CA G1

2025-04-11 → 2026-05-12

[ inter ]Thawte TLS RSA CA G1

558 days left

issuer: DigiCert Global Root G2

2017-11-02 → 2027-11-02

// Save sueddeutsche.de → we'll run this daily and alert on changes. /signup →