Local Calling Guide

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

NXX: 830

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-830 A Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 0 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 1 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 2 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 3 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 4 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-04-15   
231-830 5 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-07-08   
231-830 6 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-07-28   
231-830 7 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-10-01   
231-830 8 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 9 Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      

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

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