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: KAMSUTXCDS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
385-380 A Ogden UT 3881 ALL WEST/UTAH, INC. 660      
435-333 A Park City UT 3881 ALL WEST/UTAH, INC. 660      
435-336 A Coalville UT 2288 ALL WEST COMMUNICATIONS - UT 660      
435-782 A Jordanelle UT 2288 ALL WEST COMMUNICATIONS - UT 660      
435-783 A Kamas UT 2288 ALL WEST COMMUNICATIONS - UT 660      
435-785 A Timber Lakes UT 2288 ALL WEST COMMUNICATIONS - UT 660      
435-793 A Randolph UT 2288 ALL WEST COMMUNICATIONS - UT 660      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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