Port Check

Your current IP: Use this IP
Telnet

What is Port Check ?

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 this checker to make sure the server port(25565) is configured properly for port forwarding, then only your friends will be able to connect to your server.

Common Service Ports

Port numbers ranges from 1 to 65535, out of which well known ports are pre-defined as convention by IANA.
  • 0-1023 - Well known ports (HTTP, SMTP, DHCP, FTP etc)
  • 1024-49151 - Reserved Ports
  • 49152-65535 - Dynamic/Private Ports
    21 - FTP
    22 - SSH
    25 - SMTP
    53 - DNS
    80 - HTTP
    110 - POP3
    143 - IMAP
    194 - IRC
    443 - HTTPS
    445 - SMTPS
    873 - RSYNC
    3306 - MySQL
    5432 - PgSQL
    3389 - Remote Desktop
    5361 - PC Anywhere
    5900 - VNC
    6379 - Redis
    11211 - Memcached
    25565 - Minecraft

Router Port Forwarding

The public IP address of your home or office is usually the IP address of your router. If you run any service such as Email Server (port 25), FTP Server (21) or Web Server (80 or 443), you will need to setup port forwarding on your router to forward corresponding port from the router to the internal local IP address of the PC that runs the service. You may want to refer this link on how to setup router port forwarding Port Forwarding .

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