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.
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Switch: WLNGWVCPX7X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
304-666 A West Union WV 423C ARMSTRONG TELECOMMUNICATIONS, INC. - WV 256      
304-666 1 West Union WV 423C ARMSTRONG TELECOMMUNICATIONS, INC. - WV 256   2010-05-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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