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: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-574 A Hill City SD HLCYSDCORS1  9631 QWEST CORPORATION 640      
605-574 0 Hill City SD   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2011-04-12   
605-574 1 Hill City SD   106F BANDWIDTH.COM CLEC, LLC - SD 640   2011-10-01   
605-574 2 Hill City SD   9631 QWEST CORPORATION 640      
605-574 3 Hill City SD   9631 QWEST CORPORATION 640      
605-574 4 Hill City SD   9631 QWEST CORPORATION 640      
605-574 5 Hill City SD   162G ONVOY, LLC - SD 640   2012-12-19   
605-574 6 Hill City SD   162G ONVOY, LLC - SD 640   2013-12-18   
605-574 7 Hill City SD   162G ONVOY, LLC - SD 640   2009-05-28   
605-574 8 Hill City SD   162G ONVOY, LLC - SD 640   2011-10-28   
605-574 9 Hill City SD   9631 QWEST CORPORATION 640      

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

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