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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-777 A Lebec CA BKFDCA12DS1  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 734      
661-777 0 Lebec CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-01-15   
661-777 1 Lebec CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 734      
661-777 2 Lebec CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-777 3 Lebec CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 734   2010-11-28   
661-777 5 Lebec CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-777 6 Lebec CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-07-16   
661-777 7 Lebec CA   649C ONVOY, LLC - CA 734   2010-10-03   
661-777 8 Lebec CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2021-11-08   
661-777 9 Lebec CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2013-10-28   

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

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