SSL Certificate Checker

Check certificate validity, expiry, certificate chain, and HTTPS configuration for any website.

What is SSL Certificate Checker?

SSL Certificate Checker is an online analysis tool for checking a website’s TLS certificate, validity dates, and basic certificate chain. It helps you reach the right data quickly when domain, IP, email, or certificate infrastructure changes.

This page provides a clear definition, usage steps, and interpretation guide. Results can depend on DNS caches, registry privacy, CDNs, network timeouts, and remote service availability. Confirm critical changes with an authoritative provider or more than one resolver.

How does it work?

The request is sent to the appropriate technical source for the input type. The result may include certificate subject, issuer, validity dates, SAN hostnames, and certificate-chain information. Always evaluate the returned value together with its source, timestamp, record type, and intended configuration.

How to use it

Open the tool above and enter the target. Example: ornekalanadi.com.
Check the input format and submit the request.
Compare dates, hostnames, priorities, policies, and returned values with the expected configuration.
If you make a correction, wait for the relevant cache or TTL and test again.

How to interpret the results

A technically valid response is not automatically a correct configuration. Investigate unexpected hosts, expired or nearly expired certificates, incorrect IP addresses, missing authorization, and inconsistent DNS records. Back up the current configuration before changing production systems.

Frequently asked questions

Are SSL and TLS the same?

Modern connections use TLS, although SSL remains a common name for certificates and HTTPS security.

What happens when a certificate expires?

Browsers may display security warnings, which can reduce trust and conversions.

Is HTTPS important for SEO?

HTTPS is a fundamental security practice that also supports a trustworthy search experience.