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Scan any domain or IP address for open and closed ports using TCP and UDP protocols. Learn how to use our port checker tool, what ports are, and how to troubleshoot connectivity issues with port scanning.
Port checker is a utility used to identify your external IP address and detect open ports on your connection. This tool is useful for finding out if your port forwarding is setup correctly or if your server applications are being blocked by a firewall.
Port Checker lets you test port forwarding settings on your router and find out if a port is open or closed on your device. You can enter any port number and check your IP address or a remote IP address for security or gaming purposes.
Advanced Port Scanner is a free network scanner allowing you to quickly find open ports on network computers and retrieve versions of programs running on the detected ports.
Scan for open TCP and UDP ports and services with Nmap on a cloud platform. Get accurate and detailed reports, customize scan options, and automate port scanning with a paid account.
The port scanner can determine whether there are any vulnerabilities that currently exist with open ports. You can use the tool to identify open ports, test network connectivity, and gather useful information.
Port Checker | Port Scanner is a free online tool for checking open ports on your device. It's useful for testing port settings on your router.
