~/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 20 days. Schedule renewal.
── output ─────
- Issued to
- gitlab.com
- Issued by
- Sectigo RSA Domain Validation Secure Server CA
- Valid from
- 2025-04-12
- Valid until
- 2026-05-11 (20 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
- A7:5D:CF:6B:0C:30:6A:A0:4C:C8:51:68:88:64:64:A3:20:73:59:86:E0:D4:C3:57:5F:EA:05:29:E3:D3:58:27
- Serial
- D8837DD34AF806350EA1D10EFB090DE2
subject_alt_names · 6
gitlab.com
auth.gitlab.com
customers.gitlab.com
email.customers.gitlab.com
gprd.gitlab.com
www.gitlab.com
certificate_chain · 3 certs
[ leaf ]gitlab.com
20 days left
issuer: Sectigo RSA Domain Validation Secure Server CA
2025-04-12 → 2026-05-11
[ inter ]Sectigo RSA Domain Validation Secure Server CA
1715 days left
issuer: USERTrust RSA Certification Authority
2018-11-02 → 2030-12-31
[ root ]USERTrust RSA Certification Authority
4290 days left
issuer: USERTrust RSA Certification Authority
2010-02-01 → 2038-01-18