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: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 527

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-527 A Soddy Daisy TN   939H COMMIO LLC 472   2023-01-13   
423-527 0 Soddy Daisy TN   939H COMMIO LLC 472   2023-01-13   
423-527 1 Soddy Daisy TN   939H COMMIO LLC 472   2023-01-13   

Last updated: Tue, 24 Jan 2023 03:01:57 UTC

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