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Life & fun · August 24, 2014

Port Checker

simple tool to check open ports on your computer

Port Checker launched on August 24, 2014 with 87 votes, #448 of 2,208 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 12 years on.

Visit portchecker.co ↗Port Checker alternativestop 20% of August 2014

In plain words

Port Checker is a free online tool that checks whether specific ports are open on a user's computer and verifies port forwarding configuration on routers. It helps diagnose connection issues by identifying if ports are blocked by firewalls or internet service providers, making it useful for troubleshooting email clients, instant messaging applications, and other software that require specific ports. The tool also serves security purposes by allowing users to audit their network's open ports.

written from the facts on this page · October 2026

From the sources

Port Checker is a simple tool to check for open ports and test port forwarding setup on your router. Verify and diagnose connection errors on your computer.

Check for open ports and verify port forwarding setup on your router. Port Checker is a simple and free online tool for checking open ports on your computer/device, often useful in testing port forwarding settings on a router. For instance, if you're facing connection issues with a program (email, IM client etc) then it may be possible that the port required by the application is getting blocked by your router's firewall or your ISP . In such cases, this tool might help you in diagnosing any problem with firewall setup . You could also find this useful for security purpose, in case you're not sure whether a particular port is open or closed. If you host and play games like Minecraft, use…from portchecker.co

Does a similar job

all alternatives →
  • Open Port Checker2014 · portchecker.co · ▲19

    Port Checker is a simple tool to check for open ports and test port forwarding setup on your router. Verify and diagnose connection errors on your computer.

  • Port Checker App2025 · portchecker.app · ▲6

    Check open ports for free

  • Port Checker Online2022 · portcheckers.com · ▲1

    Port checker online

  • Port CheckerDec 2025 · port-checker.net

    Check port status online

  • Open Port Checker2024 · openport.net · ▲2

    Port Checker, Online Port Checker, Free Online Port Checker

  • Port Checker Tool2025 · datafeature.com · ▲9

    Verify Open Ports on Any IP Address

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