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: WNSLNCQO1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-253 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-254 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-287 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424      
336-324 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-327 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-340 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-558 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-575 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424      
336-577 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424      
336-587 A Greensboro NC 6664 SPRINT SPECTRUM L.P. 424      
336-602 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424   2007-05-24   
336-624 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424      
336-695 A Winston-Salem NC 6664 SPRINT SPECTRUM L.P. 424   2010-08-21   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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