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Shapefile
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Environmental Systems Research Institute (Redlands, Calif.)
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Boundaries
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Telephone
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ESRI 10 USA Census
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NYU
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Polygon
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1. 2010 U.S. Telephone Area Code Boundaries
2010. U.S. Telephone Area Code Boundaries represents the telephone area codes for the United States. They are also known as Numbering Plan Areas (NPA). T... Environmental Systems Research Institute (Redlands, Calif.).