1. If public IP is used, you can view it in ipconfig under cmd.
2. If it is dial-up Internet access, you need to check the router WAN port or open a web browser, and enter IP 138.com to display your public IP.
As for the port number binding to the service, you can only query the port occupied by a service or program. Enter netstat -ano in cmd to find out all the ports occupied and check the ports you need to know.
The port number ranges from 0 to 65535, such as 80 for web, 2 1 for ftp and so on.