Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-916 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
540-602 A Stafford VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-630 A Washington Zone 17 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-04-27   
571-801 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-802 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-803 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-804 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-805 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-820 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-821 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-822 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-823 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
571-824 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-234 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-235 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-236 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-237 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-238 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-239 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-240 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-01-08   
771-249 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2025-02-10   
771-474 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2024-04-08   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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