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: 997

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-997 A Flandreau SD FLNDSDCORS1  9631 QWEST CORPORATION 640      
605-997 0 Flandreau SD   162G ONVOY, LLC - SD 640   2021-04-02   
605-997 1 Flandreau SD   162G ONVOY, LLC - SD 640   2021-04-02   
605-997 2 Flandreau SD   9631 QWEST CORPORATION 640      
605-997 3 Flandreau SD   9631 QWEST CORPORATION 640      
605-997 4 Flandreau SD   9631 QWEST CORPORATION 640   2006-10-16   
605-997 5 Flandreau SD   9631 QWEST CORPORATION 640      
605-997 6 Flandreau SD   162G ONVOY, LLC - SD 640   2009-05-28   
605-997 7 Flandreau SD   508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-08   
605-997 8 Flandreau SD   920F MCC TELEPHONY OF THE MID-WEST, LLC - SD 640   2010-07-31   

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

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