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: GLVYAZXC2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
928-230 A Lake Havasu City AZ 6529 T-MOBILE USA, INC. 666      
928-279 A Kingman AZ 6529 T-MOBILE USA, INC. 666      
928-303 A Kingman AZ 5562 METROPCS, INC. 666      
928-418 A Kingman AZ 6529 T-MOBILE USA, INC. 666      
928-435 A Bullhead City AZ 6529 T-MOBILE USA, INC. 666      
928-450 A Bullhead City AZ 6529 T-MOBILE USA, INC. 666      
928-486 A Lake Havasu City AZ 6529 T-MOBILE USA, INC. 666      
928-514 A Bullhead City AZ 6529 T-MOBILE USA, INC. 666      
928-542 A Bullhead City AZ 6529 T-MOBILE USA, INC. 666      

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

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