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: 979

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-979 A North Sioux City SD SXCYIA78X8X  073H TELNYX LLC 630      
605-979 0 North Sioux City SD   073H TELNYX LLC 630   2021-01-04   
605-979 1 North Sioux City SD   162G ONVOY, LLC - SD 630   2021-07-08   
605-979 2 North Sioux City SD   162G ONVOY, LLC - SD 630   2021-03-13   
605-979 3 North Sioux City SD   162G ONVOY, LLC - SD 630   2020-08-20   
605-979 4 North Sioux City SD   162G ONVOY, LLC - SD 630   2020-08-20   
605-979 5 North Sioux City SD   162G ONVOY, LLC - SD 630   2019-08-09   
605-979 6 North Sioux City SD   162G ONVOY, LLC - SD 630   2019-08-09   
605-979 7 North Sioux City SD   162G ONVOY, LLC - SD 630   2019-11-07   
605-979 8 North Sioux City SD   162G ONVOY, LLC - SD 630   2021-03-13   

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

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