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: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-397 A Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 0 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 1 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 2 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 3 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 4 Winston-Salem NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2008-06-12   
336-397 5 Winston-Salem NC GNBPNCDNDS0  7973 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 424   2006-03-25   
336-397 6 Winston-Salem NC GNBPNCDNDS0  7973 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 424   2006-03-25   
336-397 7 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 8 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      
336-397 9 Winston-Salem NC GNBONCEU97Z  8660 WINDSTREAM NUVOX, INC. 424      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.