Local Calling Guide

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

NXX: 341

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-341 A Lancaster CA SHOKCA024MD  7421 AT&T - LOCAL 730      
661-341 0 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-08-14   
661-341 1 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-05-07   
661-341 2 Lancaster CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2008-01-15   
661-341 3 Lancaster CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2005-11-24   
661-341 4 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-10-06   
661-341 5 Lancaster CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2008-01-15   
661-341 6 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-11-06   
661-341 7 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2009-06-02   
661-341 8 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2009-12-14   
661-341 9 Lancaster CA SHOKCA024MD  7421 AT&T - LOCAL 730      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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