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: CHRLTXXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
830-274 A Charlotte PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-274 1 Charlotte PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-277 A Charlotte TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-277 1 Charlotte TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-277 2 Charlotte TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-277 9 Charlotte TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      

Last updated: Sun, 17 May 2026 03:26:51 UTC

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