Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 854

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-854 A De Smet SD DESMSDCORS1  9631 QWEST CORPORATION 640      
605-854 0 De Smet SD   9631 QWEST CORPORATION 640      
605-854 1 De Smet SD   106F BANDWIDTH.COM CLEC, LLC - SD 640   2012-02-04   
605-854 2 De Smet SD   580H AIRUS, INC. - SD 640   2019-05-13   
605-854 3 De Smet SD   9631 QWEST CORPORATION 640      
605-854 4 De Smet SD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 640   2016-11-11   
605-854 5 De Smet SD   162G ONVOY, LLC - SD 640   2009-05-28   
605-854 6 De Smet SD   920F MCC TELEPHONY OF THE MID-WEST, LLC - SD 640   2010-07-31   
605-854 7 De Smet SD   508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-07   
605-854 8 De Smet SD   162G ONVOY, LLC - SD 640   2011-09-15   
605-854 9 De Smet SD   9631 QWEST CORPORATION 640      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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