Local Calling Guide

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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 725

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-725 A Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 0 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 1 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 2 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 3 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 4 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 5 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2010-11-01   
231-725 6 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 7 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 8 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-725 9 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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