How to use this tool
Enter a domain and TLS port. Each certificate DNS subject alternative name is returned as one result row without unrelated certificate fields.
Focused result
This page returns only the fields required for its named SSL/TLS check. It does not reuse the generic certificate table from the other tools.
Frequently Asked Questions
What does the Certificate SAN Checker check?
List only the DNS subject alternative names contained in the deployed certificate.
What should I enter in the
Enter the certificate hostname and use the intended TLS port. Port 443 is the standard choice for HTTPS.
Are the results live?
The result reflects the data and network response available when the check runs. DNS, HTTP, and certificate information can change later.
What does an unavailable result mean?
An unavailable result means the requested source could not be reached or did not return usable data. It is not automatically a pass or a failure.
Should I rely on this result alone before making changes?
Use the report as a diagnostic reference and confirm important changes with the authoritative provider, hosting panel, or certificate issuer.