You can check directly in the browser by clicking on the green/grey padlock in the address bar beside your domain name. A drop-down menu will display a message that says, ‘connection secure’. To view more details, click on “Certificate” in the same menu. This provides details about the certificate, the certifying authority and the start and expiry date of the certificate. Note: You can use a free SSL Certificate Checker tool to see the kinds of SSL Certificates installed on your domains.