Directory of Numbering Resources

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

Resources in This Category

• 800 Service Management System

  http://www.sms800.com/
  Information about the central database for US toll free number management.

• International Numbering Plans

  http://www.numberingplans.com/
  A collection of all international numbering plans in the world. Some features require a paid subscription.

• The Telephone Exchange Name Project

  http://ourwebhome.com/TENP/TENproject.html
  The historical relationship between North American telephone exchange names and numbers.

Related Categories

• Home > Business > Telecommunications > Regulation
• Home > Reference > Directories > Address and Phone Numbers > Area Codes

 

Home > Business > Telecommunications > Resources > Numbering

 

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