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.

NPA: 336 [Rate centres in NPA 336] [Dial plan for NPA 336]

NXX: 423

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-423 A Kernersville NC GNBPNCDNDS0  7973 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 424      
336-423 0 Kernersville NC GNBPNCDNDS0  7973 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 424      
336-423 1 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2007-04-11   
336-423 2 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2007-01-05   
336-423 3 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2006-07-27   
336-423 4 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2006-02-01   
336-423 5 Kernersville NC GNBPNCDNDS0  7973 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 424      
336-423 6 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2005-02-02   
336-423 7 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2004-07-30   
336-423 8 Kernersville NC GNBONCEU61Z  5562 METROPCS, INC. 424   2004-01-22   
336-423 9 Kernersville NC GNBONCEU38Z  6664 SPRINT SPECTRUM, L.P. 424   2003-07-28   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.