~/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 329 more days.
── output ─────
- Issued to
- www.tesco.com
- Issued by
- Sectigo Public Server Authentication CA EV R36
- Valid from
- 2026-02-16
- Valid until
- 2027-03-18 (329 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
- 17:BD:31:C6:D1:C5:53:36:A7:28:CE:4D:53:DA:17:14:14:6C:47:ED:3A:43:8F:8F:25:21:3F:46:FA:04:38:0A
- Serial
- CB479244CF00F60E9625C3DF5A5FBFCD
subject_alt_names · 4
www.tesco.com
direct.tescoassets.com
tesco.com
ui.tescoassets.com
certificate_chain · 4 certs
[ leaf ]www.tesco.com
329 days left
issuer: Sectigo Public Server Authentication CA EV R36
2026-02-16 → 2027-03-18
[ inter ]Sectigo Public Server Authentication CA EV R36
3620 days left
issuer: Sectigo Public Server Authentication Root R46
2021-03-22 → 2036-03-21
[ inter ]Sectigo Public Server Authentication Root R46
4288 days left
issuer: USERTrust RSA Certification Authority
2021-03-22 → 2038-01-18
[ root ]USERTrust RSA Certification Authority
4288 days left
issuer: USERTrust RSA Certification Authority
2010-02-01 → 2038-01-18