Local Calling Guide

Area code/prefix search

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Astoria, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-832 A CLLKSDXADS0  1651 INTERSTATE TELECOM COOP, INC. - SD 640      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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