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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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   490J DISH WIRELESS, LLC 138      
607-456 2 Addison NY ADSNNYXA1MD  421C ARMSTRONG TELECOMMUNICATIONS, INC. - NY 138      
607-456 3 Addison NY   490J DISH WIRELESS, LLC 138      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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