print email comment close NANPA: North American Numbering Plan Administration [Area Codes] URL: http://www.nanpa.com/ Description: Find area codes (known officially as Numbering Plan Areas, or NPAs) by state, country, or number. Includes area codes introduced since 1995, and planned NPAs not yet in service. Also find a discussion of how area codes are constructed. From the North American Numbering Plan Administration (NANPA), an agency responsible for the numbering plan for the Public Switched Telephone Network for Canada, the United States and its territories, and the Caribbean. Publisher: NeuStar, Inc. Extra Keywords NANP Library of Congress Subject Headings: Telephone -- Area codes LII Database Information: Record 3060 created by Carole Leita on 01/20/1998 Last modification on 08/19/2005 Published: 01/20/1998   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/3060