IPv4 Port Checker

Check Open Port, Verify Port Forwarding

This is a set of free utilities for:

- Checking open port or your public/external IP and remotely verifying if a port is open or closed. It is useful for users who wish to check open port online or verify port forwarding and check to see if a service is running or a firewall or router forwarding port or ISP is blocking certain ports.

- IPv4 Port Tester, Check your port on your public IPv4.

The Port.Tools works well on both desktop and mobile browser.

Forwarding/Public Port Checker