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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Kyle, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-455 A WALLSDXADS0  1659 GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM 640      
605-781 A PNRGSDXADS2  870F NATIVE AMERICAN TELECOM - PINE RIDGE LLC - SD 640      

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

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