What is my private IP?

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Most internet-connected computers have a private IP address and a public IP address. The public IP address is what is seen by the world, such as web servers. The private IP address is used within your own network to allow private communication between local devices.

This page uses a hidden Java applet to determine your private IP address. If you do not have Java installed or it is disabled, your IP address will not be shown above.

Webpages that capture your private IP address can use this information to track web activity to a specific computer. For example, a large corporation may have thousands of computers all using the same public IP, but (generally) each computer must have their own unique private IP. If a webpage tracks your public and private IP addresses, they could potentially find out which specific computer connected to the webpage.