Local Calling Guide

Area code/prefix search

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

NXX: 652

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-652 A Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-11-03   
661-652 0 Santa Clarita: Newhall-Castaic DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-26   
661-652 1 Santa Clarita: Newhall-Castaic DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-26   
661-652 2 Santa Clarita: Newhall-Castaic DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-26   
661-652 3 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2025-05-16   
661-652 4 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2025-05-16   
661-652 5 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2025-05-16   
661-652 6 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-03-02   
661-652 7 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-05-23   
661-652 8 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-04-21   
661-652 9 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-11-03   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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