Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 469

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-469 A Muskegon MI GDRPMIBL61Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2026-05-03   
231-469 0 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2026-09-07   
231-469 1 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2026-09-07   
231-469 4 Muskegon MI   490J BOOST SUBSCRIBERCO L.L.C. 348   2026-09-12   
231-469 9 Muskegon MI GDRPMIBL61Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2026-05-03   

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

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