Local Calling Guide

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Duncombe, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
515-543 A GOWRIAXODS1  1328 WEBSTER-CALHOUN COOP. TEL. ASSN. 632      

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

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