Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 KGMNAZXCEMD  227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 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 KGMNAZXCEMD  227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 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  6664 SPRINT SPECTRUM, L.P. 666   2006-06-20   
928-444 7 Bullhead City AZ   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   6529 T-MOBILE USA, INC. 666   2011-04-04   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.