Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 546

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-546 A Torrance CA   624H ONVOY SPECTRUM, LLC 730   2025-03-24   
424-546 0 Torrance CA   624H ONVOY SPECTRUM, LLC 730   2025-03-24   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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