Service
SSL certificate details
For each HTTPS website we record the details of the certificate the server presents.
- Subject and issuer
- Subject alternative names (the host names the certificate covers)
- Valid-from and expiry dates, with days remaining
- Serial number and SHA-256 fingerprint
- Trust and hostname verification errors, in plain language
- Certificate chain (leaf, intermediates) where the server provides it
Scope
We inspect the certificate presented to our monitor, using SNI, from one of the addresses your domain resolves to. Different CDN edges or servers may present different certificates. Revocation status and full TLS vulnerability scanning are not included.