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.

Switch: KGMNAZXCEMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
928-219 A Bullhead City AZ 612K CSC VOICE, LLC 666      
928-299 A Bullhead City AZ 612K CSC VOICE, LLC 666      
928-302 A Lake Havasu City AZ 612K CSC VOICE, LLC 666      
928-404 A Bullhead City North AZ 612K CSC VOICE, LLC 666      
928-444 A Bullhead City AZ 612K CSC VOICE, LLC 666      
928-529 A Kingman AZ 612K CSC VOICE, LLC 666      
928-566 A Lake Havasu City AZ 612K CSC VOICE, LLC 666      
928-733 A Lake Havasu City AZ 612K CSC VOICE, LLC 666      
928-770 A Mohave Valley AZ 612K CSC VOICE, LLC 666      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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