Do this you will see WAN address as well
How to look up your IP address depends on what operating system you are using.
Windows XP, Windows 2000, or Windows NT
Click the Start menu
Select Programs
Select Command Prompt
Type ipconfig /all
Press Enter
Windows 95, Windows 98, or Windows ME
Click the Start button
Select Run
Type winipcfg
Click OK
Linux, MAC OS X, Solaris, AIX and other UNIX variants
At the command Prompt type hostname | nslookup
At the command Prompt type ifconfig -a
You may need to become root and include a full path when typing these commands.
Mac OS X
Open the System Preferences in Mac OS X
In the resulting window, click the Network icon.
In the Network window select the appropriate location
IP Address will be shown
Macintosh Mac OS 7.x - Mac OS 9.x
Computer must have an active Internet connection
Go to the Apple menu by clicking the Apple picture icon
Select Control Panels
Go to the TCP/IP control panel or MacTCP control panel depending on operating system
Choose File
Click Get Info
TCP/IP Control Panel