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: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-531 A Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
323-531 0 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-11-14   
323-531 1 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-11-14   
323-531 2 Los Angeles: DA 09 CA ANHMCA01XEY  516C AT&T CORP. 730   2013-10-11   
323-531 3 Los Angeles: DA 09 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2024-01-18   
323-531 4 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-08-04   
323-531 5 Los Angeles: DA 09 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2014-09-14   
323-531 6 Los Angeles: DA 09 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-20   
323-531 7 Los Angeles: DA 09 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-03-23   
323-531 8 Los Angeles: DA 09 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-20   
323-531 9 Los Angeles: DA 09 CA ANHMCA01XEY  516C AT&T CORP. 730   2014-07-14   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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