Enter the Hostname/IP Address of the service to test.

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This port check tool allows for testing whether a remote port is accessible on an internet connected host. Generally, if the port is open and this tool can connect to it, that means all the required firewall runs are in place that allows internet client to connect to the 'listening' service. If a port is confirmed open, but the website, application, or service still does not display correctly, this could indicate a problem with the application or the client.


  • host: port: 53
  • host: www.monitostech.com port: 443