Local Calling Guide

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NPA: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX: 597

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-597 A Montebello CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-597 0 Montebello CA ANHMCA01XEY  516C AT&T CORP. 730   2014-12-16   
323-597 1 Montebello CA MTPKCACG2MD  792K CHARTER IP ENABLED SERVICES, LLC 730   2015-01-18   
323-597 2 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2014-12-25   
323-597 3 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-02-16   
323-597 4 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-02-16   
323-597 5 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-12-16   
323-597 6 Montebello CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   
323-597 7 Montebello CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   
323-597 8 Montebello CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   
323-597 9 Montebello CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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