Local Calling Guide

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NPA: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 319

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-319 A Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
657-319 0 Fullerton CA LNBHCAAXDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 730   2018-05-16   
657-319 1 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2019-11-10   
657-319 2 Fullerton CA LSANCA03IMD  553J WHITESKY COMMUNICATIONS, LLC 730   2021-10-01   
657-319 3 Fullerton CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-09-09   
657-319 4 Fullerton CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-09-09   
657-319 5 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2019-04-21   
657-319 6 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2019-01-04   
657-319 7 Fullerton CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2018-11-03   
657-319 8 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2018-09-21   
657-319 9 Fullerton CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2018-05-13   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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