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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 .
- Plan de numérotation nord-américain — Wikipédia
Le plan de numérotage nord-américain (North American...
- List of North American Numbering Plan area codes - Wikipedia
Each NPA is identified by one or more numbering plan area...
- North American Numbering Plan - Simple English Wikipedia, the ...
The North American Numbering Plan (NANP) is a telephone...
- Plan de numérotation nord-américain — Wikipédia
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.
NANPA is the organization that manages the numbering plan for the US, Canada and some Caribbean countries. Learn about the NANP, its administration, events, updates, and resources.
Learn about the history, scope and format of the NANP, an integrated telephone numbering plan serving 20 North American countries. The NANP was developed by AT&T in 1947 and conforms with ITU standard E.164.