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SECURITY

A secure connection
starts here.

Check your domain’s HTTPS certificate, trust status and expiry date from this server.

Free to use No sign-up Simple results
How to use this tool and read the result ↓

SSL checker

Start with a public website or domain.

ONE-TIME CHECK

Try ·Checked from this hosting server

UNDERSTAND THE RESULT

How to check an HTTPS certificate

HTTPS uses TLS to protect a connection. “SSL certificate” is still a common name for the certificate involved. NetLuma checks whether it can establish a trusted HTTPS connection for the domain and shows certificate details when the server returns them.

Start with these steps

  1. Enter the exact hostname visitors use. example.com and www.example.com can have different configurations.
  2. Press Check SSL. The tool checks HTTPS on port 443 and verifies the certificate rather than ignoring trust errors.
  3. Read the trust result first, then review the expiry date, issuer and hostname details if available.

Understanding the certificate result

Verified · trusted connection completed
The HTTPS request passed certificate verification for this hostname from the hosting server. An HTTP error on the page can coexist with a valid HTTPS connection.
Expiry date · time to review renewal
The displayed date is UTC. NetLuma highlights a verified certificate with fewer than 14 complete days remaining so the domain owner can review renewal.
Issuer and names · certificate identity
The issuer is the certificate authority. The subject and alternative names describe which hostnames the certificate can cover.
Unverified · inspect the message
An expired, untrusted or mismatched certificate can fail verification. A network timeout or blocked connection can also stop the check, so a failed request alone does not diagnose the certificate.

What to try next

If your own certificate is nearing expiry, inspect your hosting provider’s SSL and renewal status. If the domain is newly connected, confirm DNS is pointing to the right server. Repeat the check after a genuine configuration change.

Know the limits

This checks one hostname and connection. It does not audit every TLS setting, application vulnerability or visitor network. A valid certificate protects the connection; it does not certify that the website’s content is trustworthy.

Technical referencesMDN: Transport Layer Security

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FROM QUESTION TO ANSWER

Three steps.
One less mystery.

For the moments when
“it should be working” isn’t enough.

01

Pick your tool

Choose the part of your website or connection you want to inspect.

02

Run a check

Enter a public domain or URL. For your IP, just press the button.

03

Get the picture

Read the result, see what it means and know what to investigate next.

GOOD TO KNOW

A little more context.

What does the SSL checker verify?+

It attempts a trusted HTTPS connection for the hostname on port 443. Where available, it also shows the certificate’s issuer, validity dates and time remaining.

Does a failed check mean my certificate is broken?+

Not always. Network restrictions, timeouts or server configuration can prevent a connection. Read the result message and confirm from another network when needed.