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Area Code Boundaries

GeoTel’s area code boundaries data set consists of boundary polygons representing the geographic area covered by the United States Area Codes (the first 3 digits of the 10 digit U.S. phone number, also known as an NPA). Area code boundaries are a basic method for identifying coverage areas and customers local to that area code. GeoTel’s area code data is available for the entire United States or by individual states.

How Area Code Boundaries Can Be Utilized

Area code boundary data for telecommunications can be employed for network planning purposes, as well as determining geographical customer base and areas of service.


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