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: 225

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-225 A El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-225 0 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-05-12   
424-225 1 El Segundo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
424-225 2 El Segundo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
424-225 3 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-06-22   
424-225 4 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-06-22   
424-225 5 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730   2016-11-03   
424-225 6 El Segundo CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2008-12-21   
424-225 7 El Segundo CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2010-04-04   
424-225 8 El Segundo CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2010-04-04   
424-225 9 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-07-31   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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