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- The plan divided most of North America into eighty-six numbering plan areas (NPAs). Each NPA was assigned a unique three-digit code, typically termed NPA code or simply area code. These codes were first used in Operator Toll Dialing by long-distance operators in establishing calls via trunks between toll offices.
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Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
CodeTerritory Or UseDate200not in use; available for non-geographic ...easily recognizable code (ERC)New Jersey ( Bergen County and Hudson ...19471947Southwestern Connecticut ( Bridgeport, ...1947This is a list of North American telephone area codes in effect for the North American Numbering Plan (NANP). The area to which an area code is officially assigned is known as a Numbering Plan Area (NPA). An area code is part of a telephone number in the United States, Canada, and the Caribbean.
International access. 011. List of dialing codes. The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1.
- 1
- 011
- +1 NXX NXX-XXXX
NPA (Area) Codes. The area served by the NANP is divided into smaller Numbering Plan Areas (NPAs), each identified by a three-digit NPA code, commonly called an area code. For quick information about a specific area code, use the area code search.
Dec 28, 2020 · This includes a three-digit Numbering Plan Area (NPA) code — an area code followed by a seven-digit local number or subscriber number. The format is usually represented as: +1 NXX-NXX-XXXX. Which Countries are Included in the NANP? Anguilla: 264. Antigua & Barbuda: 268. Bahamas (the): 242. Barbados: 246. Bermuda: 441.
- What is the North American Numbering Plan?The North American Numbering Plan (NANP) is a telephone numbering plan that serves 20 North American countries and exists to simplify and facilitat...
- What Countries Use the North American Numbering Plan?The NANP mainly covers the US and its territories, Canada, and some Caribbean countries.
- Why do the US and Canada Have the Same Country Code?All North American countries included in the North American Numbering Plan are assigned the country code (+1), including the US and Canada.
- What is a North American Phone Number Example?An example of a North American phone number is +1(469) 123-4567. It uses the format: +1 (area code) xxx-xxxx.
Many numbering plan administrators subdivide their territory of service into geographic regions designated by a prefix, often called an area code or city code, which is a set of digits forming the most-significant part of the dialing sequence to reach a telephone subscriber.
Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. Numbering plan areas may be assigned multiple area codes to provide adequate numbering resources, in which case the local numbering plan is called an overlay.
