Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Dorchester, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
563-314 A ROCHMNROQMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
563-497 A LACRMNXLDS1  1345 ACE TEL. ASSN. - MN 620      

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

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