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: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-384 A Santa Monica: Mar Vista DA CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
424-384 0 Santa Monica: Mar Vista DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2015-03-29   
424-384 1 Santa Monica: Mar Vista DA CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2015-04-30   
424-384 2 Santa Monica: Mar Vista DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2015-06-07   
424-384 3 Santa Monica: Mar Vista DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-15   
424-384 4 Santa Monica: Mar Vista DA CA   515J IP HORIZON LLC 730   2015-07-03   
424-384 5 Santa Monica: Mar Vista DA CA   793K TWC IP ENABLED SERVICES, LLC 730   2015-06-24   
424-384 6 Santa Monica: Mar Vista DA CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2015-03-16   
424-384 7 Santa Monica: Mar Vista DA CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2015-05-15   
424-384 8 Santa Monica: Mar Vista DA CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2015-03-25   
424-384 9 Santa Monica: Mar Vista DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-03-23   

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

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