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What is a North American area code?
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What is a numbering plan area code?
What is the North American numbering plan?
In 1947, AT&T completed the new design for a nationwide toll network that established the original North American area codes. The new numbering plan provided for 152 area codes, each with a capacity to serve as many as 540 central offices. Originally, only eighty-six area codes were assigned.
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- +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. You can also find the area code for a city or town with population greater than 20,000.
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, ...1947Central Office Code Reports. Regulatory Contacts. Search for Area Code Listings. Signup to Receive NANPA Notifications. NRUF Processing and Forms. Getting Started with CO Code Requests. Getting Started for Interconnected VoIP Providers. Getting Started with CIC Assignments. NAS User Guides.
This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters . See also.
New Area CodeAffected NpaJurisdictionProjected Exhaust Date [1]236/672/778, 604, 2502025 – 4th Qtr2025 – 3rd Qtr2026 – 1st Qtr2025 – 3rd QtrThis 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.
Policies and activities include: Ensuring local number portability, which allows consumers to keep their existing phone number when switching to a new carrier Ensuring access to number resources for all providers Extending the life of the 10-digit number system, known as the North American Numbering Plan, through thousands-block number pooling a...
