~/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 78 more days.
── output ─────
- Issued to
- ad.nl
- Issued by
- R12
- Valid from
- 2026-04-22
- Valid until
- 2026-07-21 (78 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
- BB:C7:DF:AD:33:E3:4E:3D:CC:97:12:F3:54:7B:74:35:55:6C:55:8D:63:17:2D:C2:70:34:A9:D8:C3:B3:70:40
- Serial
- 062E918FDD561CDD45751ED55B44CCA1B3FC
subject_alt_names · 6
acc.ad.nl
ad.nl
brandedcontent.ad.nl
live.ad.nl
mobileapi-acc.ad.nl
mobileapi.ad.nl
certificate_chain · 2 certs
[ leaf ]ad.nl
78 days left
issuer: R12
2026-04-22 → 2026-07-21
[ inter ]R12
313 days left
issuer: ISRG Root X1
2024-03-13 → 2027-03-12