The next thing is to find thee router default IP address. There are several different ways to do this. If you have found your MAC address before printed on the router, check again and see whether there is an IP address too. You can also check the user’s manual. If you want to feel more techie you can use the Command Prompt. After you open it, all you have to do is to type IPCONFIG and look for the Default Gateway. In most cases you will see numbers like 192.168.1.1 next to it but there can be a different combination of numbers.
Source : http://www.192168ll.net/