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.

OCN: 0267 ARMSTRONG TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
304-349 A Lawford WV LWFDWVXA0MD  254      
304-474 A Rockport WV RCPTWVXA0MD  254      
304-477 A Smithville WV SMVLWVXA0MD  254      
304-628 A Cairo WV CAIRWVXA0MD  254      
304-643 A Harrisville WV HRVLWVXA0MD  254      
304-869 A Ellenboro WV ELBOWVXA0MD  254      

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

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