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: 317

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-317 A Mitchell SD   162G ONVOY, LLC - SD 640   2025-04-11   
605-317 0 Mitchell SD   162G ONVOY, LLC - SD 640   2025-04-11   
605-317 1 Mitchell SD   162G ONVOY, LLC - SD 640   2025-04-11   
605-317 2 Mitchell SD   162G ONVOY, LLC - SD 640   2025-04-11   
605-317 3 Mitchell SD   162G ONVOY, LLC - SD 640   2025-04-11   
605-317 4 Mitchell SD   580H AIRUS, INC. - SD 640   2025-05-12   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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