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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.
- List of North American Numbering Plan area codes - Wikipedia
List of North American Numbering Plan area codes. The North...
- List of North American Numbering Plan area codes
This is a list of North American telephone area codes in...
- Original North American area codes - Wikipedia
A fundamental requirement for the success of automated toll...
- Telephone numbering plan - Wikipedia
National telephone numbers are defined by national or...
- North American Numbering Plan - Simple English Wikipedia, the free ...
The North American Numbering Plan (NANP) is a telephone...
- List of North American Numbering Plan area codes - Wikipedia
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.