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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. Some North American countries, most notably Mexico, do not participate with the NANP.
- Original North American area codes
A fundamental requirement for the success of automated toll...
- North American Numbering Plan Expansion
The expansion of the North American Numbering Plan (NANP) is...
- Telephone numbering plan
A telephone numbering plan is a type of numbering scheme...
- Original North American area codes
The North American Numbering Plan ( NANP) is a telephone numbering plan. It includes 24 countries and territories, including the United States, Canada, Bermuda, and 17 nations of the Caribbean. [1] [2] There are three-digit area codes and seven-digit telephone numbers.
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 participate with the NANP.
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.
