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.

Switch: GNBONCEU31Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-296 A King NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-520 A Reidsville NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-541 A Greensboro NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-543 A Greensboro NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-554 A Greensboro NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-690 A Greensboro NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-717 A Stoneville NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-970 A Winston-Salem NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
743-241 A Burlington NC 8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      

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

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