Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 616 [Rate centres in NPA 616] [Dial plan for NPA 616]

NXX: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
616-304 A Grand Rapids MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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