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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: SNMNCAXPX2Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
424-524 A Malibu CA 624H ONVOY SPECTRUM, LLC 730      
424-525 A Santa Monica: Mar Vista DA CA 624H ONVOY SPECTRUM, LLC 730      
424-626 A West Los Angeles CA 624H ONVOY SPECTRUM, LLC 730      
424-630 A Redondo CA 624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-640 A West Los Angeles CA 624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-660 A Santa Monica: Mar Vista DA CA 624H ONVOY SPECTRUM, LLC 730   2025-01-02   
424-902 A Santa Monica: Santa Monica DA CA 624H ONVOY SPECTRUM, LLC 730      
661-608 A Hi Vista CA 624H ONVOY SPECTRUM, LLC 730      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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