~/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 21 days. Schedule renewal.
── output ─────
- Issued to
- ad.nl
- Issued by
- R13
- Valid from
- 2026-02-11
- Valid until
- 2026-05-12 (21 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
- D8:7F:17:1C:03:22:C8:CE:C7:5E:FD:B3:C1:92:00:9D:41:E1:FB:5E:23:FE:59:66:DE:99:BD:88:54:D3:31:BD
- Serial
- 05740B610C53804B331FAE9BFFE288F189FB
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
21 days left
issuer: R13
2026-02-11 → 2026-05-12
[ inter ]R13
325 days left
issuer: ISRG Root X1
2024-03-13 → 2027-03-12