Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 431 [Rate centres in NPA 431] [Dial plan for NPA 431]

NXX: 879

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
431-879 A Rapid City MB BRNDMBWC0MD  120F WESTMAN MEDIA COOPERATIVE LTD. - MB 888 808801    

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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