Produced: on or before 5th calendar day monthly
Current Release: September 4, 2019
Distribution Frequency: monthly or quarterly (issue date: January, April, July, October)
Distribution Format: Internet download
NPA NXX Databases compiled from definitive industry and regulatory sources. Updated monthly providing current telephone area code prefix and exchange numbering assignments and associated carrier data.
Full coverage of the North American Numbering Plan which includes the United States and its territories, Canada, Bermuda, Anguilla, Antigua & Barbuda, the Bahamas, Barbados, the British Virgin Islands, the Cayman Islands, Dominica, the Dominican Republic, Grenada, Jamaica, Montserrat, Sint Maarten, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Trinidad and Tobago, and Turks & Caicos.
These data products are suitable for use in a variety of applications such as; call routing and rating, CDR processing and analysis, juridictional traffic analysis, TCPA and wireless-do-not-call compliance, caller id systems, telephone exchange validation, and so on.
1 Each NPA NXX record may contain up to four U.S. Zip codes or four Canadian Postal FSA codes.
2 U.S. FIPS county codes or Canadian Census Division codes.
3 U.S. CBSA codes or Statistics Canada CMA/CA codes.