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: SHNTAZXCRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
928-672 A Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-672 0 Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-672 2 Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-672 3 Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-672 6 Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-672 9 Shonto AZ 4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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