Local Calling Guide

Area code/prefix search

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Rough Rock, AZ

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
928-728 A RHRKAZXCRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-728 0 RHRKAZXCRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-728 2 STMCAZXEXMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 980   2020-04-13   
928-728 3 RHRKAZXCRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-728 4 STMCAZXE7MD  073H TELNYX LLC 980   2022-08-01   
928-728 5 RHRKAZXCRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      
928-728 8 STMCAZXE6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 980   2021-10-24   
928-728 9 RHRKAZXCRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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