Local Calling Guide

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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 425

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-425 A Santa Clarita: Newhall-Castaic DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
661-425 0 Santa Clarita: Newhall-Castaic DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-05-18   
661-425 1 Santa Clarita: Newhall-Castaic DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2014-05-20   
661-425 2 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-08-25   
661-425 3 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-11-08   
661-425 4 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-09-15   
661-425 5 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2019-06-14   
661-425 6 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-07-17   
661-425 7 Santa Clarita: Newhall-Castaic DA CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2015-08-27   
661-425 8 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-12-29   
661-425 9 Santa Clarita: Newhall-Castaic DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-05-20   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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