Local Calling Guide

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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-930 8 Beulah MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-02-01   
231-930 9 Beulah MI   3535 ACD TELECOM, INC. - MI 348      
231-932 A Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348      
231-933 A Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348      
231-935 A Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348      
231-936 A Scottville MI GDRPMIBL52Z  829J PAETEC ITEL, LLC 348      
231-936 0 Scottville MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-12-13   
231-936 1 Scottville MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2007-12-16   
231-936 2 Scottville MI   543C ONVOY, LLCV - MI 348   2012-06-01   
231-936 3 Scottville MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-24   
231-936 4 Scottville MI   624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-936 5 Scottville MI   516C AT&T CORP. 348   2011-08-23   
231-936 6 Scottville MI   543C ONVOY, LLCV - MI 348   2013-03-18   
231-936 7 Scottville MI   829J PAETEC ITEL, LLC 348   2004-02-12   
231-936 8 Scottville MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-936 9 Scottville MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-937 A Howard City MI HWCYMIXGDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-937 0 Howard City MI   3535 ACD TELECOM, INC. - MI 348   2005-02-11   
231-937 1 Howard City MI   691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI 348   2014-07-15   
231-937 2 Howard City MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   
231-937 3 Howard City MI   145J TERRA NOVA TELECOM INC. 348   2025-07-12   
231-937 4 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-937 5 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-937 6 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-937 7 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-937 8 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-937 9 Howard City MI   0695 FRONTIER NORTH, INC. - MI 348      
231-938 A Traverse City MI ACMEMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-938 0 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 1 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 2 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 3 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 4 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 5 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 6 Traverse City MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-31   
231-938 7 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 8 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-938 9 Traverse City MI   9323 MICHIGAN BELL TEL CO 348      
231-939 A Petoskey MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-939 0 Petoskey MI   543C ONVOY, LLCV - MI 348   2021-03-25   
231-939 1 Petoskey MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-14   
231-939 2 Petoskey MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2019-11-21   
231-939 3 Petoskey MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2019-11-21   
231-939 4 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-09-22   
231-939 5 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-09-22   
231-939 6 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-09-22   
231-939 7 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-09-22   
231-939 8 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-09-22   
231-939 9 Petoskey MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2017-09-23   
231-941 A Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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