Checking open ports online

What is a port scanner and why?

Checking open ports using a scanner shows which ports are open on your or someone else's computer / site and what they answer. The check is performed through the NMAP scanner and shows how open your access to PC / site for the outside world.

Type of ports scanned:

Scan Type:

Test results:

* If the result is 'Host is down,' then the firewall or router is being checked and blocking IP addresses.