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: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-560 A Compton: Gardena DA CA   649C ONVOY, LLC - CA 730   2025-10-25   
424-560 0 Compton: Gardena DA CA   649C ONVOY, LLC - CA 730   2025-10-25   
424-560 1 Compton: Gardena DA CA   649C ONVOY, LLC - CA 730   2025-10-25   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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