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The North American Numbering Plan conforms with International Telecommunication Union (ITU) Recommendation E.164, which establishes an international numbering framework. (en) Le plan de numérotage nord-américain (North American Numbering Plan ou NANP) est un système intégré de numérotation téléphonique commun à 20 pays en Amérique du ...
There are also 80 area codes reserved for future expansion of the numbering system, that is, those whose middle digit is 9. Article North American Numbering Plan expansion tells how they might be used. This makes a total of 322 currently unused area codes, or 40% of the total space of 800 possible area codes.
North America United States, Canada, and other NANP countries. Twenty-four countries and territories share the North American Numbering Plan (NANP), with a single country code, 1. The formatting convention for telephone numbers is (NPA) NXX-XXXX, where NPA is the three-digit area code, and NXX-XXXX is the seven-digit subscriber number.
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.
A lot of us "area code philes" do not like this plan at all. We generally prefer the N9XX plan or some close variant of it. Also, the 00/11 plan is proposed by, I believe, a billing forum of the industry. If the FCC looks into it, I would hope that ordinary users help sink the 00/11 plan. GBC 16:18, 19 April 2012 (UTC) Reply
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. Some North American countries, most notably Mexico, do not ...
