Tool to check for open ports


Open Port Check Tool

Description - Open Port Check Tool

This page will serve as a free utility for remotely verifying a port is open or closed. It will be useful for users who wish to check to see if a server is running or a firewall or ISP is blocking certain ports.


Most residential ISP's block ports to combat viruses and spam. The most commonly blocked ports are port 80 and port 25.

Port 80 is the default port for http traffic. With blocked port 80 you will need to run your web server on a non-standard port in conjunction with a port 80/web redirect from

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Vitalwerks Internet Solu
Las Vegas NV
United States 89120

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