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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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-857 A Yankton SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-857 0 Yankton SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-857 1 Yankton SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-857 2 Yankton SD SXFLSDPS0MD  073H TELNYX LLC 640   2018-09-25   
605-857 3 Yankton SD SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2014-11-06   
605-857 4 Yankton SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-03-13   
605-857 5 Yankton SD SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2018-06-27   
605-857 6 Yankton SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-03-13   
605-857 7 Yankton SD SXFLSDCOLMD  508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-08   
605-857 8 Yankton SD SXFLSDCORMD  5180 LEVEL 3 COMMUNICATIONS, LLC - SD 640   2013-09-28   
605-857 9 Yankton SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      

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

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