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.

NPA: 607 [Rate centres in NPA 607] [Dial plan for NPA 607]

NXX: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
607-456 A Addison NY ADSNNYXA1MD  421C ARMSTRONG TELECOMMUNICATIONS, INC. - NY 138      
607-456 1 Addison NY NYCMNYZR24Z  490J DISH WIRELESS, LLC 138   2024-10-10   
607-456 2 Addison NY ADSNNYXA1MD  421C ARMSTRONG TELECOMMUNICATIONS, INC. - NY 138   2023-07-15   

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

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