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: HURNSDCODS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-352 A Huron SD 9631 QWEST CORPORATION 640      
605-353 A Huron SD 9631 QWEST CORPORATION 640      
605-353 0 Huron SD 9631 QWEST CORPORATION 640      
605-353 1 Huron SD 9631 QWEST CORPORATION 640      
605-353 2 Huron SD 9631 QWEST CORPORATION 640      
605-353 3 Huron SD 9631 QWEST CORPORATION 640   2008-05-13   
605-353 6 Huron SD 9631 QWEST CORPORATION 640      
605-353 7 Huron SD 9631 QWEST CORPORATION 640      
605-353 8 Huron SD 9631 QWEST CORPORATION 640      
605-353 9 Huron SD 9631 QWEST CORPORATION 640      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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