North American Numbering Plan
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There are three-digit area codes and seven-digit telephone numbers.
Related pages[change | change source]
References[change | change source]
- NANPA : North American Numbering Plan Administration – About Us
- MEHTA, STEPHANIE N. (1999-02-26). "The Kennedy Space Center Acquires A New Area Code: 3-2-1, as in Blast Off". Wall Street Journal.