Local Calling Guide

Area code/prefix search

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Oldham-Ramona, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-482 A BRNDSDXA582  1657 ALLIANCE COMM. COOPERATIVE, INC. (SPLIT ROCK) 640      

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

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