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: 931

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-931 A Huron SD SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-931 1 Huron SD   145J TERRA NOVA TELECOM INC. 640   2023-08-10   
605-931 2 Huron SD   145J TERRA NOVA TELECOM INC. 640   2025-07-24   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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