Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-300 A Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-300 0 Los Angeles: DA 02 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2009-12-28   
323-300 1 Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-300 2 Los Angeles: DA 02 CA LSANCAJW6MD  073H TELNYX LLC 730   2019-01-07   
323-300 3 Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-300 4 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-01-24   
323-300 5 Los Angeles: DA 02 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-06-12   
323-300 6 Los Angeles: DA 02 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-06-12   
323-300 7 Los Angeles: DA 02 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-05-09   
323-300 8 Los Angeles: DA 02 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2011-02-11   
323-300 9 Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      

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

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