Find the IP address of your router

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WINDOWS

Windows users can start a command prompt and type in "ipconfig" to see the Default Gateway. The output will look like this on Windows 7: 

Windows IP Configuration

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :

   IPv4 Address. . . . . . . . . . . : 192.168.5.29

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . : 192.168.5.1

The output of the command Windows XP is almost identical. On either system, if the computer is using Wi-Fi rather than Ethernet, look for "Wireless Network Connection" instead of "Local Area Connection".

The same ipconfig command works on the desktop side of Windows 8, which also identifies the router as "Default Gateway". A wireless connection on Windows 8 is called "Wireless LAN adapter Wi-Fi", while a wired connection is identified as "Ethernet adapter Ethernet".