Local Calling Guide

Area code/prefix search

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

NXX: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-375 A Delano CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734      
661-375 0 Delano CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2009-03-06   
661-375 1 Delano CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2012-07-11   
661-375 2 Delano CA BKFDCA01X2X  5562 METROPCS, INC. 734   2012-07-11   
661-375 3 Delano CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2008-12-16   
661-375 4 Delano CA BKFDCA01X2X  5562 METROPCS, INC. 734   2010-01-29   
661-375 5 Delano CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2012-05-30   
661-375 6 Delano CA BKFDCA01X2X  5562 METROPCS, INC. 734   2011-10-15   
661-375 7 Delano CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2009-01-15   
661-375 8 Delano CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2009-03-22   
661-375 9 Delano CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2012-05-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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