Inspect the HTTPS certificate of a domain, including validity, hostname matching, expiration and certificate details.
An SSL checker is a tool used to inspect the HTTPS certificate installed on a website. It can help verify whether a certificate is currently valid, whether the certificate matches the requested hostname, and when the certificate will expire.
Enter a domain name above to inspect the certificate presented by its HTTPS server. ALVIX checks the certificate directly and displays available certificate information.
An SSL/TLS certificate helps establish an encrypted connection between a browser and a website. Modern websites normally use HTTPS to protect data exchanged between visitors and the server.
A certificate also contains information used to identify the domain and the certificate authority that issued it. Browsers use this information as part of the HTTPS security process.
SSL certificates have a defined validity period. When a certificate expires, browsers and other clients can display HTTPS security warnings and connections may no longer be trusted as expected.
Checking the expiration date can therefore help website owners identify certificates that need to be renewed before they become invalid.
An SSL/TLS certificate is used by a website to establish HTTPS connections and provide certificate information for the requested domain.
Enter the domain name into the SSL Checker above. The result shows whether the certificate is within its validity period and whether the hostname matches.
Enter the domain above and look at the Valid Until field. The checker also reports the available remaining validity information.
Hostname matching verifies whether the domain being checked is covered by the names listed in the SSL/TLS certificate.
A check can fail when the server does not provide a certificate correctly, the domain cannot be reached over HTTPS, or the certificate data cannot be retrieved.
Continue checking your domain, IP address and network configuration with these ALVIX tools:
