Port Availability Checker

An open-port check connects back to your public IP on a chosen port to confirm that port forwarding works – useful for game servers, cameras, or remote desktop.

Tool status: Requires a separate server Cannot run reliably on shared hosting or in a browser. See the page for the planned approach.

Port checking is not available on this server yet

Our current hosting blocks outgoing connections to most ports, so any result would be unreliable. The checker will be switched on when it moves to a dedicated server, and will only ever test your own IP address (216.73.216.49).

Meanwhile: compare the WAN/Internet IP shown in your router's status page with the IP on our My IP page. If they differ, your ISP uses carrier-grade NAT and incoming ports cannot be opened without their help.

What this tool can and cannot do

Shared web hosting blocks most outgoing connections to non-standard ports, so a check from our current server would report almost every port as closed, which would be misleading. The checker is built but switched off, and will be enabled on a dedicated server in a later phase. To avoid misuse it will only test your own IP address, never third-party hosts.

Data sources: Requires a dedicated server (planned)

Understanding the results

Open: something accepted the connection. Closed: the device refused it. Filtered/timeout: a firewall silently dropped it.

Troubleshooting

  • Your ISP may use carrier-grade NAT (CGNAT): if the WAN address on your router differs from the IP on our My IP page, port forwarding cannot work without asking your ISP for a public IP.

Frequently asked questions

Is an open port dangerous?

Only if the service behind it is outdated or poorly secured. Open only the ports you need and keep that software updated.