Local Calling Guide

Area code/prefix search

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Corsica, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-946 A DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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