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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-640 A West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 0 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-19   
424-640 5 West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 6 West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 7 West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 8 West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 9 West Los Angeles CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2025-01-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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