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: MLBNSDCORS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-432 A Milbank SD 9631 QWEST CORPORATION 640      
605-432 1 Milbank SD 9631 QWEST CORPORATION 640      
605-432 2 Milbank SD 9631 QWEST CORPORATION 640      
605-432 3 Milbank SD 9631 QWEST CORPORATION 640      
605-432 4 Milbank SD 9631 QWEST CORPORATION 640      
605-432 5 Milbank SD 9631 QWEST CORPORATION 640      
605-432 6 Milbank SD 9631 QWEST CORPORATION 640      
605-432 7 Milbank SD 9631 QWEST CORPORATION 640      
605-432 9 Milbank SD 9631 QWEST CORPORATION 640      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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