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: FRTNUTMADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
801-402 A Farmington UT 9636 QWEST CORPORATION 660      
801-447 A Farmington UT 9636 QWEST CORPORATION 660      
801-447 3 Farmington UT 9636 QWEST CORPORATION 660      
801-447 4 Farmington UT 9636 QWEST CORPORATION 660      
801-447 8 Farmington UT 9636 QWEST CORPORATION 660      
801-451 A Farmington UT 9636 QWEST CORPORATION 660      
801-923 0 Farmington UT 9636 QWEST CORPORATION 660   2008-01-04   

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

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