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: 705

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-705 A Sioux Falls SD SXFLSDPS1MD  939H COMMIO, LLC 640      
605-705 0 Sioux Falls SD   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2025-02-20   
605-705 1 Sioux Falls SD   162G ONVOY, LLC - SD 640   2025-10-07   
605-705 2 Sioux Falls SD   5180 LEVEL 3 COMMUNICATIONS, LLC - SD 640   2021-06-12   
605-705 3 Sioux Falls SD   162G ONVOY, LLC - SD 640   2019-11-07   
605-705 4 Sioux Falls SD   162G ONVOY, LLC - SD 640   2019-11-07   
605-705 5 Sioux Falls SD   939H COMMIO, LLC 640   2019-08-16   
605-705 6 Sioux Falls SD   162G ONVOY, LLC - SD 640   2019-11-07   
605-705 7 Sioux Falls SD   624H ONVOY SPECTRUM, LLC 640   2022-01-23   
605-705 8 Sioux Falls SD   624H ONVOY SPECTRUM, LLC 640   2022-01-23   
605-705 9 Sioux Falls SD   624H ONVOY SPECTRUM, LLC 640   2022-01-23   

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

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