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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-378 A Lomita CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2024-01-23   
424-378 0 Lomita CA   649C ONVOY, LLC - CA 730   2019-03-24   
424-378 1 Lomita CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2015-04-27   
424-378 2 Lomita CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-04-16   
424-378 3 Lomita CA   649C ONVOY, LLC - CA 730   2015-01-04   
424-378 4 Lomita CA   649C ONVOY, LLC - CA 730   2015-01-04   
424-378 5 Lomita CA   649C ONVOY, LLC - CA 730   2015-01-04   
424-378 6 Lomita CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2015-11-20   
424-378 7 Lomita CA   829J PAETEC ITEL, LLC 730   2016-01-26   
424-378 8 Lomita CA   6529 T-MOBILE USA, INC. 730   2015-04-23   
424-378 9 Lomita CA   6529 T-MOBILE USA, INC. 730   2015-07-19   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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