Local Calling Guide

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

NXX: 445

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-445 A Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
657-445 0 Fullerton CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2015-12-14   
657-445 1 Fullerton CA   829J PAETEC ITEL, LLC 730   2015-12-20   
657-445 2 Fullerton CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-25   
657-445 3 Fullerton CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-25   
657-445 4 Fullerton CA ANHMCA01XEY  516C AT&T CORP. 730   2016-07-27   
657-445 5 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-10-30   
657-445 6 Fullerton CA   793K TWC IP ENABLED SERVICES, LLC 730   2016-06-16   
657-445 7 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-01-24   
657-445 8 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-01-24   
657-445 9 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-12-13   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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