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: 421C ARMSTRONG TELECOMMUNICATIONS, INC. - NY

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
607-440 2 Whitesville NY ADSNNYXA1MD  138   2023-10-20   
607-456 A Addison NY ADSNNYXA1MD  138      
607-456 2 Addison NY ADSNNYXA1MD  138   2023-07-15   
607-848 2 Troupsburg NY ADSNNYXA1MD  138   2024-02-22   
607-925 2 Woodhull NY ADSNNYXA1MD  138   2024-02-22   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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