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About Dial-A-ZIP Address Verification

Dial-A-ZIP is a form of US domestic delivery address verification that can look up the ZIP+4 and correct most common addressing errors. Through the Internet, Dial-A-ZIP can verify your address against the US Postal Service list of all addresses in the USA in less than one second. This process also verifies an address, which is required, before you can print Internet Postage for your mailpiece .

For additional, basic information, see also Guidelines: Address Verification.

You can customize various aspects of using Dial-A-ZIP to suit your preferences, including:

For more information about options, see About Advanced Dial-A-ZIP Options.

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