~/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 171 more days.
── output ─────
- Issued to
- coolblue.nl
- Issued by
- Amazon RSA 2048 M04
- Valid from
- 2025-09-11
- Valid until
- 2026-10-09 (171 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
- 7E:28:9B:7D:BB:96:B8:A9:D7:36:15:00:B5:21:74:F1:67:1D:53:4B:6E:3F:AD:64:F0:3B:2B:0C:88:7F:C3:79
- Serial
- 091AC58D411414C49FB866FFA6460ADA
subject_alt_names · 1
coolblue.nl
certificate_chain · 3 certs
[ leaf ]coolblue.nl
171 days left
issuer: Amazon RSA 2048 M04
2025-09-11 → 2026-10-09
[ inter ]Amazon RSA 2048 M04
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