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.
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Switch: SLKCUT26BMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
435-666 A Park City UT 965H FRACTEL, LLC 660      
435-666 6 Park City UT 965H FRACTEL, LLC 660   2019-03-26   
435-667 A Brigham City UT 965H FRACTEL, LLC 660      
435-667 8 Brigham City UT 965H FRACTEL, LLC 660   2021-09-02   
435-699 A Park City UT 965H FRACTEL, LLC 660      
435-699 9 Park City UT 965H FRACTEL, LLC 660   2021-10-11   
435-732 A Tremonton UT 965H FRACTEL, LLC 660      
435-732 5 Tremonton UT 965H FRACTEL, LLC 660   2021-09-17   
435-733 3 Duchesne UT 965H FRACTEL, LLC 660   2020-08-20   
435-777 0 Heber City UT 965H FRACTEL, LLC 660   2020-08-20   
435-777 6 Heber City UT 965H FRACTEL, LLC 660   2020-08-20   
435-866 6 Portage UT 965H FRACTEL, LLC 660   2021-09-06   
435-900 A St George UT 965H FRACTEL, LLC 660      
435-900 0 St George UT 965H FRACTEL, LLC 660   2019-08-03   
928-644 A Colorado City AZ 965H FRACTEL, LLC 660      
928-644 4 Colorado City AZ 965H FRACTEL, LLC 660   2020-11-29   
928-822 A Fredonia AZ 965H FRACTEL, LLC 660      
928-844 A Littlefield AZ 965H FRACTEL, LLC 660      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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