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.
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OCN: 1670 MIDSTATE COMMUNICATIONS, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-243 A New Holland SD KMBLSDXADS2  640      
605-245 A Fort Thompson SD KMBLSDXADS2  640      
605-249 A White Lake SD KMBLSDXADS2  640      
605-293 A Gann Valley SD KMBLSDXADS2  640      
605-337 A Platte SD KMBLSDXADS2  640      
605-726 A Academy SD KMBLSDXADS2  640      
605-732 A Stickney SD KMBLSDXADS2  640      
605-778 A Kimball SD KMBLSDXADS2  640      
605-779 A Delmont SD KMBLSDXADS2  640      
605-894 A Pukwana SD KMBLSDXADS2  640      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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