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: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-855 A Avalon CA   965H FRACTEL LLC 730   2022-07-11   
424-855 5 Avalon CA   965H FRACTEL LLC 730   2022-07-11   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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