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: 720

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-720 A Delano CA DELNCA11DS0  9740 PACIFIC BELL 734      
661-720 0 Delano CA   9740 PACIFIC BELL 734      
661-720 1 Delano CA   649C ONVOY, LLC - CA 734   2008-07-14   
661-720 2 Delano CA   9740 PACIFIC BELL 734      
661-720 3 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2006-12-08   
661-720 4 Delano CA   9740 PACIFIC BELL 734      
661-720 5 Delano CA   9740 PACIFIC BELL 734      
661-720 6 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2006-02-18   
661-720 7 Delano CA   9740 PACIFIC BELL 734      
661-720 8 Delano CA   9740 PACIFIC BELL 734      
661-720 9 Delano CA   9740 PACIFIC BELL 734      

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

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