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: 820

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-820 A Huron SD SXFLSDCHSMD  939H COMMIO, LLC 640      
605-820 0 Huron SD SXFLSDCHSMD  939H COMMIO, LLC 640   2023-06-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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