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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OCN: 6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-975 1 Yankton SD   640   2021-04-21   
605-981 0 Rapid City SD   640   2020-10-26   
605-982 8 Aberdeen SD   640   2022-09-13   
605-988 4 Sioux Falls SD   640   2006-06-21   
605-999 A Mitchell SD SXFLSDCOX9X  640      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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