north american numbering plan wikipedia - EAS
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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 international calling code 1. Some North American countries, … See more
From the Bell System's beginnings in 1876 and throughout the first part of the 20th century, telephone networks grew from essentially local or regional telephone systems. These systems expanded by growing their … See more
The NANP is administered by the North American Numbering Plan Administrator (NANPA, formerly Administration). This function is overseen by the Federal Communications Commission, which assumed the responsibility upon the breakup of the Bell … See more
The North American Numbering Plan does not set aside special non-geographic area codes exclusively for cellular phones, as is customary in some other national telephone administrations. Only one regional exception exists in area code 600 in Canada. See more
The structure of the North American Numbering Plan permits implementation of local dial plans in each plan area, depending on requirements. When multiple NPA codes serve an area in an overlay arrangement, ten-digit (10D) dialing is required. … See more
The vision and goal of the architects of the North American Numbering Plan was a system by which telephone subscribers in the United States and Canada could themselves dial and … See more
The North American Numbering Plan recognizes the need for non-geographic services by designating certain numbering blocks for such … See more
Wikipedia text under CC-BY-SA license List of North American Numbering Plan area codes - Wikipedia
North American Numbering Plan - Wikipedia
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