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: GNBONCPHX4X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-223 A Burlington NC 7796 BUSINESS TELECOM INC. - NC 424      
336-261 A Burlington NC 4620 DELTACOM, INC. - NC 424      
336-496 A Reidsville NC 7796 BUSINESS TELECOM INC. - NC 424      
336-497 A Kernersville NC 7796 BUSINESS TELECOM INC. - NC 424      
336-500 A Greensboro NC 4620 DELTACOM, INC. - NC 424      
336-553 A Greensboro NC 4620 DELTACOM, INC. - NC 424      
336-560 A Summerfield NC 4620 DELTACOM, INC. - NC 424      
336-808 A Greensboro NC 7796 BUSINESS TELECOM INC. - NC 424      
336-809 A Greensboro NC 7796 BUSINESS TELECOM INC. - NC 424      
336-831 A Winston-Salem NC 7796 BUSINESS TELECOM INC. - NC 424      
336-837 A Winston-Salem NC 4620 DELTACOM, INC. - NC 424      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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