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.

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

NXX: 476

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-476 A Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730      
424-476 0 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2023-10-23   
424-476 1 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2023-10-23   
424-476 2 Redondo CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-20   
424-476 3 Redondo CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-20   
424-476 4 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-02-25   
424-476 5 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-02-25   
424-476 6 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2023-05-07   
424-476 7 Redondo CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2023-05-07   
424-476 8 Redondo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-08-09   
424-476 9 Redondo CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-20   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.