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: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-604 A Los Angeles: DA 05 CA LSANCA34DS0  9740 PACIFIC BELL 730      
323-604 0 Los Angeles: DA 05 CA LSANCA34DS0  9740 PACIFIC BELL 730      
323-604 1 Los Angeles: DA 05 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-09-29   
323-604 2 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-05-30   
323-604 3 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-05-30   
323-604 4 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-11-12   
323-604 5 Los Angeles: DA 05 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-04-21   
323-604 6 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-09-28   
323-604 7 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-05-30   
323-604 8 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-05-30   
323-604 9 Los Angeles: DA 05 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-08-22   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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