Your IP Address may not be correct if ..
You are using proxy server.
You are using cache server.
You are using proxy website (i.e proxify.com) to access the web.
Your network admin or Internet Provider is hiding your IP Address by some other means.
If you want to see your local network IP Address.
Windows:
Use ipconfig command on Windows command prompt.
Or you can user ipconfig /all for detailed information about your local network connection.
Linux:
User ifconfig on Linux.
ifconfig has broad options therefore it will be good idea to check the manual of the command using man ifconfig command.
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