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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Dupree, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-200 A SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-200 0 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-200 1 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-200 2 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-200 3 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-200 9 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-365 A EGBTSDXA964  1647 CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY 640      
605-538 A EGBTSDXA964  1647 CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY 640      
605-821 A SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-821 9 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2011-01-08   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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