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: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-306 A Winston-Salem NC GNBONCCKW30  4809 CENTURYLINK COMMUNICATIONS LLC - NC 424      
336-306 0 Winston-Salem NC KRVLNCARBMD  6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 424   2005-09-08   
336-306 1 Winston-Salem NC GNBONCCKW30  4809 CENTURYLINK COMMUNICATIONS LLC - NC 424      
336-306 2 Winston-Salem NC KRVLNCARBMD  6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 424   2005-07-14   
336-306 3 Winston-Salem NC KRVLNCARBMD  6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 424   2005-07-14   
336-306 4 Winston-Salem NC KRVLNCARBMD  6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 424   2005-07-14   
336-306 5 Winston-Salem NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2006-06-11   
336-306 6 Winston-Salem NC KRVLNCARBMD  6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 424   2005-08-08   
336-306 7 Winston-Salem NC GNBONCCKW30  4809 CENTURYLINK COMMUNICATIONS LLC - NC 424      
336-306 8 Winston-Salem NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2006-06-11   
336-306 9 Winston-Salem NC GNBONCEU50Z  580C TIME WARNER CBL INFO SVC (NC) DBA TIME WARNER CBL 424   2007-02-14   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.