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: 229

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-229 A Delano CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-229 0 Delano CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2009-10-03   
661-229 1 Delano CA   515J IP HORIZON LLC 734      
661-229 2 Delano CA   515J IP HORIZON LLC 734      
661-229 3 Delano CA   5562 METROPCS, INC. 734   2009-10-18   
661-229 4 Delano CA   515J IP HORIZON LLC 734      
661-229 5 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2003-06-08   
661-229 6 Delano CA   6529 T-MOBILE USA, INC. 734   2005-08-20   
661-229 7 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2005-03-31   
661-229 8 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2006-05-13   
661-229 9 Delano CA   6529 T-MOBILE USA, INC. 734   2006-07-17   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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