See Who’s Issued SSL/TLS Certificates to Your Domain Name
Certificate Transparency (CT) Searching gives organizations an opportunity to review SSL/TLS certificates that have been issued in their name. It helps to prevent interception by impersonators and identify the issuance of SSL/TLS certificates by rogue CAs. Entrust Datacard supports this practice by recording all EV and OV SSL/TLS certificates that we issue to the CT logs by default with an option for customers to opt-out if they wish to maintain privacy. This practice promotes transparency and an open way for domain owners to audit and monitor certificates that have been issued in their name.