Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-728 A Galena MO   597F VOIP INNOVATIONS, LLC 522   2026-09-17   
417-728 0 Galena MO   597F VOIP INNOVATIONS, LLC 522   2026-09-17   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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