~/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 38 more days.
── output ─────
- Issued to
- www.argos.co.uk
- Issued by
- Sectigo RSA Organization Validation Secure Server CA
- Valid from
- 2025-05-29
- Valid until
- 2026-05-29 (38 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
- 0A:34:BB:75:86:6B:B0:5D:F3:19:91:A6:97:7C:F5:18:F6:53:11:04:BE:BD:CA:F3:61:CD:96:9F:FD:30:96:22
- Serial
- DACED20A08DA6008151C6090791CEC7D
subject_alt_names · 10
www.argos.co.uk
api-v4.argos.co.uk
api.argos.co.uk
argos.co.uk
bolt.argos.co.uk
chat.argos.co.uk
labs.argos.co.uk
m.argos.co.uk
tu.argos.co.uk
youtube.argos.co.uk
certificate_chain · 4 certs
[ leaf ]www.argos.co.uk
38 days left
issuer: Sectigo RSA Organization Validation Secure Server CA
2025-05-29 → 2026-05-29
[ inter ]Sectigo RSA Organization Validation Secure Server CA
1715 days left
issuer: USERTrust RSA Certification Authority
2018-11-02 → 2030-12-31
[ inter ]USERTrust RSA Certification Authority
985 days left
issuer: AAA Certificate Services
2019-03-12 → 2028-12-31
[ root ]AAA Certificate Services
985 days left
issuer: AAA Certificate Services
2004-01-01 → 2028-12-31