Numbering Resources Telecommunications

Sources of information on the history and development of worldwide public telephone numbering plans.

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See Also:
  • International Numbering Plans - A collection of all international numbering plans in numbering the world. numbering Some features require a paid numbering subscription.
  • 800 Service Management System - Information about the central database for US toll numbering free number resources management.
  • Area Code Information - Detailed information on the history and current developments numbering in North American NPA allocations.
  • The Telephone Exchange Name Project - The historical relationship between North American telephone exchange telecommunications names and numbers.

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