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: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-431 A Los Angeles: DA 12 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-431 0 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-09-09   
323-431 1 Los Angeles: DA 12 CA   515J IP HORIZON LLC 730   2003-10-12   
323-431 2 Los Angeles: DA 12 CA   515J IP HORIZON LLC 730   2003-10-12   
323-431 3 Los Angeles: DA 12 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-431 4 Los Angeles: DA 12 CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-07-04   
323-431 5 Los Angeles: DA 12 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-431 6 Los Angeles: DA 12 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-05-22   
323-431 7 Los Angeles: DA 12 CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2021-12-19   
323-431 8 Los Angeles: DA 12 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2008-06-05   
323-431 9 Los Angeles: DA 12 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2014-09-19   

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

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