The IP address of a router can be obtained from the manual accompanying the router or from the network installers. In some cases, a router may have the IP address listed on a label at the bottom.
Every computer is assigned a specific IP address through the modem that connects the computer to the Internet. Typically the IP address consists of four numbers separated by periods. It looks like this 192.168.1.1 and can be accessed by the user with a user id and password. The Internet service provider has the IP address, router user I.D. and password. It is important to customize the I.D. and password.