Search the global Certificate Transparency logs to discover all SSL/TLS certificates issued for a domain. Essential for subdomain discovery and security auditing.
Certificate Transparency (CT) is an open framework for monitoring and auditing SSL/TLS certificates. When a Certificate Authority (CA) issues a certificate, it is logged in a publicly accessible, append-only CT log. This allows domain owners to monitor for unauthorized certificates and helps security researchers track CA activity.
CT logs are one of the most effective ways to find hidden subdomains that have had certificates issued to them.
Monitor for potentially fraudulent certificates issued in your domain's name without your knowledge.
View the entire history of certificates issued for a domain, including expired and revoked ones.