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SSL Certificate Checker

Query crt.sh CT logs for issued certificates. Live TLS handshake inspection isn't possible from the browser alone.

Features

  • CT lookup
  • Issuer/dates
  • JSON result

How to use SSL Check

  • 1
    Enter a hostname.
  • 2
    Review CT results.

Examples

example.com

Input
example.com
Output
issuer + validity fields

About SSL Check

SSL Certificate Checker surfaces Certificate Transparency history for a domain via crt.sh.

Frequently asked questions

Browsers can’t read remote live certs via JS - CT is the client-side alternative.

CT shows issuance history; verify live status with openssl/server tools.

No.