Check any website's SSL/TLS certificate: who issued it, when it expires, which hostnames it covers and whether browsers will trust it. Results come from a live connection to the site on port 443.
Browsers trust a certificate when three things are true: it chains up to a trusted certificate authority, it has not expired, and it lists the hostname you visited (in the subject alternative names). This checker tests all three.
A certificate can look fine in your own browser yet fail for other visitors if the server forgets to send the intermediate certificate. The “Trusted chain” row catches that.
Public certificates have short lifetimes by design, which limits the damage if a private key leaks. Free certificates from Let's Encrypt last 90 days, and the industry is moving to even shorter maximum lifetimes over the next few years.
That makes automatic renewal essential. If this tool shows fewer than 14 days remaining on a site that should auto-renew, check that the renewal job is running and that port 80 or your DNS challenge is reachable.
Modern sites should negotiate TLS 1.3, or at least TLS 1.2. Older protocol versions are disabled by current browsers. The protocol and cipher rows show what your server agreed to use for this connection.
Website care & hosting plans
Care plans include uptime and security monitoring, and Devma Hosting renews your SSL automatically. No expired-certificate surprises.
Yes. The checker only performs a normal TLS handshake on port 443 (the same thing a browser does) and does not send any data to the site.
The certificate was issued for different names than the one you entered. A common cause is a certificate for example.com but not www.example.com, or a server sending its default certificate because the site is not configured for that name.
This tool checks public domain names on port 443 only. Private networks and IP addresses are blocked for security.
Yes. Websites on our managed hosting plans and on Devma Hosting get free certificates that are issued and renewed automatically, and care plans monitor them.
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