Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 1152 DUMONT TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
319-267 A Allison IA ALSNIAAB1MD  635      
641-857 A Dumont IA DUMTIAXODS0  632      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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