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: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-228 A Santa Monica: Mar Vista DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
424-228 0 Santa Monica: Mar Vista DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2007-06-28   
424-228 1 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-08-07   
424-228 2 Santa Monica: Mar Vista DA CA   793K TWC IP ENABLED SERVICES, LLC 730   2008-08-15   
424-228 3 Santa Monica: Mar Vista DA CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2010-01-08   
424-228 4 Santa Monica: Mar Vista DA CA   793K TWC IP ENABLED SERVICES, LLC 730   2007-07-25   
424-228 5 Santa Monica: Mar Vista DA CA   793K TWC IP ENABLED SERVICES, LLC 730   2007-07-25   
424-228 6 Santa Monica: Mar Vista DA CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2009-10-12   
424-228 7 Santa Monica: Mar Vista DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-04-30   
424-228 8 Santa Monica: Mar Vista DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-11-25   
424-228 9 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-06-25   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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