~/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 344 more days.
── output ─────
- Issued to
- *.nrc.nl
- Issued by
- Sectigo Public Server Authentication CA OV R36
- Valid from
- 2026-03-03
- Valid until
- 2027-03-31 (344 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
- 63:0B:5D:FD:1E:8F:36:C3:F2:48:AC:8A:21:38:35:43:88:C5:4A:BC:50:6B:09:A0:65:52:76:37:1B:35:AB:18
- Serial
- 2E3682B491B5E3AEDB340859516C1EC6
subject_alt_names · 2
*.nrc.nl
nrc.nl
certificate_chain · 4 certs
[ leaf ]*.nrc.nl
344 days left
issuer: Sectigo Public Server Authentication CA OV R36
2026-03-03 → 2027-03-31
[ inter ]Sectigo Public Server Authentication CA OV R36
3622 days left
issuer: Sectigo Public Server Authentication Root R46
2021-03-22 → 2036-03-21
[ inter ]Sectigo Public Server Authentication Root R46
4290 days left
issuer: USERTrust RSA Certification Authority
2021-03-22 → 2038-01-18
[ root ]USERTrust RSA Certification Authority
4290 days left
issuer: USERTrust RSA Certification Authority
2010-02-01 → 2038-01-18