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You searched for: Author Environmental Systems Research Institute (Redlands, Calif.) Remove constraint Author: Environmental Systems Research Institute (Redlands, Calif.) Author TomTom North America, Inc. Remove constraint Author: TomTom North America, Inc. Access Restricted Remove constraint Access: Restricted Subject Utilities and Communication Remove constraint Subject: Utilities and Communication Year 2014 Remove constraint Year: 2014
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1. United States Telephone Area Code Boundaries, 2014

2014. Environmental Systems Research Institute (Redlands, Calif.) and TomTom North America, Inc. This polygon shapefile contains the boundaries of telephone area codes in the United States. They are also known as Numbering Plan Areas (NPA). The... Environmental Systems Research Institute (Redlands, Calif.).