Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-560 A Wasco CA BKFDCA11XEX  506J TWILIO INTERNATIONAL, INC. 734      
661-560 0 Wasco CA   624H ONVOY SPECTRUM, LLC 734   2022-01-12   
661-560 1 Wasco CA   5562 METROPCS, INC. 734   2022-05-12   
661-560 2 Wasco CA   5562 METROPCS, INC. 734   2022-05-12   
661-560 3 Wasco CA   649C ONVOY, LLC - CA 734   2023-08-10   
661-560 4 Wasco CA   649C ONVOY, LLC - CA 734   2023-08-10   
661-560 5 Wasco CA   506J TWILIO INTERNATIONAL, INC. 734   2022-04-01   
661-560 6 Wasco CA   649C ONVOY, LLC - CA 734   2023-08-10   
661-560 7 Wasco CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-07-22   
661-560 8 Wasco CA   490J DISH WIRELESS, LLC 734   2023-11-13   
661-560 9 Wasco CA   939H COMMIO, LLC 734   2022-07-22   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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