Local Calling Guide

Area code/prefix search

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Plankinton, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-942 A DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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