Why Does WhatIsMyIP.com Show a Different IP Address Than IPConfig?

The IP address shown on the What Is My IP home page is your public IP also referred to as your external IP.

If your internet connection connects straight in to your computer, then your computer is assigned the external IP address. However, if your computer connects to a router then the computer will most likely get an internal IP address like 192.168.1.100 and your router will get the external IP address. So, from your computer, if you follow the steps in our How to determine if your computer is being assigned the external IP article, you’ll be able to quickly determine your computers IP.