~/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 166 more days.
── output ─────
- Issued to
- *.nu.nl
- Issued by
- DigiCert Global G3 TLS ECC SHA384 2020 CA1
- Valid from
- 2026-03-20
- Valid until
- 2026-10-04 (166 days)
- TLS version
- TLSv1.3
- Cipher
- TLS_AES_256_GCM_SHA384
- Key
- EC (prime256v1) · 256 bit
- Signature
- ecdsa-with-SHA384
- Forward secrecy
- yes
- Self-signed
- no
- Must-staple
- no
- SHA-256 fingerprint
- 5F:50:51:6E:71:AE:12:40:EA:D7:66:DF:16:06:77:3B:9F:35:FF:E5:B3:4A:26:BE:9F:F1:23:C2:21:A0:5D:8B
- Serial
- 0EA11EDD5AAEAEABDA595961A7AFADB7
subject_alt_names · 2
*.nu.nl
nu.nl
certificate_chain · 2 certs
[ leaf ]*.nu.nl
166 days left
issuer: DigiCert Global G3 TLS ECC SHA384 2020 CA1
2026-03-20 → 2026-10-04
[ inter ]DigiCert Global G3 TLS ECC SHA384 2020 CA1
1818 days left
issuer: DigiCert Global Root G3
2021-04-14 → 2031-04-13