~/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 328 more days.
── output ─────
- Issued to
- johnlewis.com
- Issued by
- DigiCert Global G2 TLS RSA SHA256 2020 CA1
- Valid from
- 2026-02-12
- Valid until
- 2027-03-15 (328 days)
- TLS version
- TLSv1.3
- Cipher
- TLS_AES_256_GCM_SHA384
- Key
- EC (prime256v1) · 256 bit
- Signature
- sha256WithRSAEncryption
- Forward secrecy
- yes
- Self-signed
- no
- Must-staple
- no
- SHA-256 fingerprint
- A6:FD:DA:61:0F:79:B0:34:43:46:10:B2:CB:8A:A8:CD:87:EA:8A:6A:28:90:6B:B1:7A:85:D1:1C:12:D2:3C:C4
- Serial
- 08E0E196B2EA493A4D887D319CF49012
subject_alt_names · 15
johnlewis.com
account.johnlewis.com
api-prod.johnlewis.com
api.johnlewis.com
apply-paymentplans.johnlewis.com
auth.johnlewis.com
checkout.johnlewis.com
device-data.johnlewis.com
m.johnlewis.com
productsupport.johnlewis.com
rental.johnlewis.com
tags.johnlewis.com
trade-in.johnlewis.com
www.johnlewis.com
pay.johnlewis.com
certificate_chain · 2 certs
[ leaf ]johnlewis.com
328 days left
issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
2026-02-12 → 2027-03-15
[ inter ]DigiCert Global G2 TLS RSA SHA256 2020 CA1
1803 days left
issuer: DigiCert Global Root G2
2021-03-30 → 2031-03-29