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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OCN: 0071 ARMSTRONG TEL. CO. - NY

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
607-356 A Whitesville NY WHVLNYXA0MD  138      
607-359 A Addison NY ADSNNYXA0MD  138      
607-458 A Woodhull NY WDHUNYXA0MD  138      
607-525 A Troupsburg NY TRBGNYXA0MD  138      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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