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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.
- Nordamerikanischer Nummerierungsplan – Wikipedia
Als North American Numbering Plan ( NANP; deutsch:...
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National telephone numbers are defined by national or...
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The initial Nationwide Numbering Plan of 1947 established...
- North American Numbering Plan - Simple English Wikipedia, the free ...
The North American Numbering Plan ( NANP) is a telephone...
- Nordamerikanischer Nummerierungsplan – 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.
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.
