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: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-372 A Delano CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734      
661-372 0 Delano CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-06-06   
661-372 1 Delano CA   5562 METROPCS, INC. 734   2014-06-09   
661-372 2 Delano CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2014-06-09   
661-372 3 Delano CA   5562 METROPCS, INC. 734   2016-04-01   
661-372 4 Delano CA   5562 METROPCS, INC. 734   2016-12-30   
661-372 5 Delano CA   6529 T-MOBILE USA, INC. 734   2021-09-11   
661-372 6 Delano CA   6529 T-MOBILE USA, INC. 734   2015-02-20   
661-372 7 Delano CA   776C CHARTER FIBERLINK CA-CCO, LLC - CA 734   2014-06-10   
661-372 8 Delano CA   6529 T-MOBILE USA, INC. 734   2015-01-26   
661-372 9 Delano CA   6529 T-MOBILE USA, INC. 734   2014-06-09   

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

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