Local Calling Guide

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NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-444 A Bullhead City AZ   612K CSC VOICE, LLC 666      
928-444 0 Bullhead City AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-01-24   
928-444 1 Bullhead City AZ BLCYAZXCDS0  2172 CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL 666   2005-06-27   
928-444 2 Bullhead City AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-03-20   
928-444 3 Bullhead City AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-06-15   
928-444 4 Bullhead City AZ   612K CSC VOICE, LLC 666   2005-05-15   
928-444 5 Bullhead City AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-06-15   
928-444 6 Bullhead City AZ GLVYAZXC2MD  6529 T-MOBILE USA, INC. 666   2006-06-20   
928-444 7 Bullhead City AZ GLVYAZXC2MD  6529 T-MOBILE USA, INC. 666   2006-09-28   
928-444 8 Bullhead City AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-05-16   
928-444 9 Bullhead City AZ GLVYAZXC2MD  6529 T-MOBILE USA, INC. 666   2011-04-04   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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