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: CLAYWVXADS0

Remotes:

Switch Switch name Switch type
BRRVWVXARS0  BIRCH RIVER  DC1 
IVDLWVXARS0  IVYDALE  DCN 
NWTNWVXARS0  NEWTON  DC1 
WIDNWVXARS0  WIDEN  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
304-587 A Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 0 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 2 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 4 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 6 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 7 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 8 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      
304-587 9 Clay WV 0270 CITIZENS TEL CO OF WV DBA FRONTIER OF WV 254      

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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