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: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-406 A Los Angeles: DA 05 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-406 0 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2008-01-28   
323-406 1 Los Angeles: DA 05 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-07-26   
323-406 2 Los Angeles: DA 05 CA ANHMCA01XEY  516C AT&T CORP. 730   2006-07-07   
323-406 3 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-07-09   
323-406 4 Los Angeles: DA 05 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-09-28   
323-406 5 Los Angeles: DA 05 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-406 6 Los Angeles: DA 05 CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2016-07-30   
323-406 7 Los Angeles: DA 05 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2008-06-16   
323-406 8 Los Angeles: DA 05 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-01   
323-406 9 Los Angeles: DA 05 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-01   

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

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