Local Calling Guide

Area code/prefix search

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

NXX: 646

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-646 A Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-08-26   
661-646 0 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-08-26   
661-646 1 Lancaster CA   624H ONVOY SPECTRUM, LLC 730   2025-01-30   
661-646 2 Lancaster CA   649C ONVOY, LLC - CA 730   2025-02-01   
661-646 3 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-22   
661-646 4 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-22   
661-646 5 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-22   
661-646 6 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-22   
661-646 7 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-10-05   
661-646 8 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-10-05   
661-646 9 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-10-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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