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: KMBLSDXADS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-234 A Chamberlain SD 9001 MIDSTATE TELECOM, INC. - SD 640      
605-243 A New Holland SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-245 A Fort Thompson SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-249 A White Lake SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-293 A Gann Valley SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-337 A Platte SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-726 A Academy SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-732 A Stickney SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-778 A Kimball SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-779 A Delmont SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      
605-894 A Pukwana SD 1670 MIDSTATE COMMUNICATIONS, INC. 640      

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

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