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.

OCN: 4256 CLARITY TELECOM, LLC DBA BLUEPEAK

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-716 A Rapid City SD RPCYSD01DS0  640      
605-717 A Spearfish SD RPCYSD01DS0  640      
605-718 A Rapid City SD RPCYSD01DS0  640      
605-719 A Rapid City SD RPCYSD01DS0  640      
605-720 A Sturgis SD RPCYSD01DS0  640      
605-721 A Rapid City SD RPCYSD01DS0  640      
605-722 A Spearfish SD RPCYSD01DS0  640      
605-723 A Belle Fourche SD RPCYSD01DS0  640      
605-755 A Rapid City SD RPCYSD01DS0  640      
605-755 0 Rapid City SD   640   2011-04-15   
605-755 1 Rapid City SD   640   2011-04-15   
605-755 2 Rapid City SD   640   2011-04-15   
605-755 3 Rapid City SD   640   2011-04-15   
605-755 4 Rapid City SD   640   2011-04-15   
605-755 5 Rapid City SD   640   2011-04-15   
605-755 6 Rapid City SD   640   2011-04-15   
605-755 7 Rapid City SD   640   2011-04-15   
605-755 8 Rapid City SD   640   2011-04-15   
605-755 9 Rapid City SD   640   2011-04-15   

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

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