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: NWBONC021MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-206 A Baldwin NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-304 A Boomer NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-400 A Champion NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-563 A Clingman NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-818 A North Wilkesboro NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-863 A Mulberry NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-975 A State Road NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
743-277 A Nathans Creek NC 792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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