Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 377

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-377 A Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 0 Kingman AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2004-10-10   
928-377 1 Kingman AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2006-06-18   
928-377 2 Kingman AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2004-12-25   
928-377 3 Kingman AZ   227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 666   2005-05-15   
928-377 4 Kingman AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2005-03-24   
928-377 5 Kingman AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2006-07-03   
928-377 6 Kingman AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-12-04   
928-377 7 Kingman AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2007-10-21   
928-377 8 Kingman AZ   6529 T-MOBILE USA, INC. 666   2006-07-24   
928-377 9 Kingman AZ   6529 T-MOBILE USA, INC. 666   2006-05-20   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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