By bringing content and advertising to you that is relevant and tailored to your interests, Yahoo! provides a more compelling online experience. Our customized "smart" services save you time and cut through the clutter. Learn More about relevant advertising.
When your web browser or email application requests a web page or email from another computer on the Internet, it automatically gives that computer the address where it should send the information. This is called your computer's "IP address." (IP stands for "Internet protocol.") For most users accessing the Internet from a dial-up Internet service provider (ISP), the IP address will be different every time you log on.
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