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: MDLBWVFARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
304-758 A Middlebourne WV 9214 FRONTIER WEST VIRGINIA INC. 256      
304-758 0 Middlebourne WV 9214 FRONTIER WEST VIRGINIA INC. 256      
304-758 2 Middlebourne WV 9214 FRONTIER WEST VIRGINIA INC. 256      
304-758 4 Middlebourne WV 9214 FRONTIER WEST VIRGINIA INC. 256      
304-758 5 Middlebourne WV 9214 FRONTIER WEST VIRGINIA INC. 256      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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