Local Calling Guide

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

NXX: 502

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-502 A Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
661-502 0 Santa Clarita: Newhall-Castaic DA CA LSANCAJW5MD  197D VONAGE AMERICA LLC 730   2020-07-19   
661-502 1 Santa Clarita: Newhall-Castaic DA CA LSANCAJW5MD  197D VONAGE AMERICA LLC 730   2020-07-19   
661-502 2 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-25   
661-502 3 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-25   
661-502 4 Santa Clarita: Newhall-Castaic DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-25   
661-502 5 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-09-23   
661-502 6 Santa Clarita: Newhall-Castaic DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2020-11-02   
661-502 7 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2020-08-21   
661-502 8 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2020-08-21   
661-502 9 Santa Clarita: Newhall-Castaic DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2020-07-18   

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

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