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: BEVRUTMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
435-438 A Beaver UT 9636 QWEST CORPORATION 660      
435-438 0 Beaver UT 9636 QWEST CORPORATION 660      
435-438 1 Beaver UT 9636 QWEST CORPORATION 660      
435-438 2 Beaver UT 9636 QWEST CORPORATION 660      
435-438 3 Beaver UT 9636 QWEST CORPORATION 660      
435-438 5 Beaver UT 9636 QWEST CORPORATION 660      
435-438 6 Beaver UT 9636 QWEST CORPORATION 660      
435-438 7 Beaver UT 9636 QWEST CORPORATION 660      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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