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: TOOLUTMAAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
385-591 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660   2024-12-15   
385-678 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
385-679 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
385-680 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
385-681 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
385-682 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
435-243 A Tooele UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      
801-820 A Clearfield UT 7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660      

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

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