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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Switch: MLLTSDXARS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-887 A Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 0 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 1 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 2 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 3 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 4 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 5 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 6 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 8 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      
605-887 9 Mellette SD 1664 JAMES VALLEY COOPERATIVE TELEPHONE COMPANY 640      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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