Check Your External IP Address and Detect Open Ports on Your Network Connection with the Open Port Checker

The Open Port Checker is a straightforward network utility that can help you identify your external IP address and check whether specific ports on your connection are open or closed. Whether you're troubleshooting a home server, verifying firewall rules, or simply curious about your network's exposure, this tool provides a quick way to probe your connection from the outside.

Key Features:

• External IP detection — displays your current external (public) IP address as seen from the internet • Open port detection — checks whether specified ports on your connection are open or closed • Browser-based — runs directly in your browser with no software to install

How It Works:

Enter the port or ports you want to check, and the tool will attempt to detect whether those ports are accessible on your external connection. Your external IP address is identified and displayed during the process, giving you a clear picture of what's visible from the outside of your network.

Common Use Cases:

• Checking whether a home server or self-hosted service is reachable from the internet • Verifying that a router or firewall rule is working as intended • Troubleshooting connectivity issues with games, applications, or remote access tools • Confirming whether a port-forwarding configuration has taken effect

Privacy & Performance:

All checks are performed instantly in your browser. Your external IP address is detected during the port-checking process and is not stored or shared by QuantumBeef.