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: GNBONCCKRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-283 A Winston-Salem NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-285 A Greensboro NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-459 A Yanceyville NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-505 A Kimesville NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2004-12-20   
336-612 A Eden NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2007-09-30   
336-790 A Greensboro NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-791 A Reidsville NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-792 A Burlington NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-793 A Winston-Salem NC 3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

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