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
231-800 A Luther MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-800 0 Luther MI   543C ONVOY, LLCV - MI 348   2017-11-26   
231-800 2 Luther MI   624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-800 5 Luther MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2023-07-05   
231-800 7 Luther MI   516C AT&T CORP. 348   2023-09-25   
231-800 8 Luther MI   543C ONVOY, LLCV - MI 348   2017-11-26   
231-803 A Morley MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-803 1 Morley MI   691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI 348   2014-07-15   
231-803 3 Morley MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-803 4 Morley MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   
231-803 5 Morley MI   516C AT&T CORP. 348   2011-08-23   
231-803 6 Morley MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-803 7 Morley MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-18   
231-805 A Kaleva MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348      
231-805 1 Kaleva MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2022-05-15   
231-805 7 Kaleva MI   3535 ACD TELECOM, INC. - MI 348   2005-03-12   
231-806 A Coral MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-808 A Central Lake MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-813 A Ludington MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-818 A Cheboygan MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-818 0 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-818 1 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-818 2 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-08-10   
231-818 3 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-10-07   
231-818 4 Cheboygan MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2020-03-18   
231-818 5 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-09-06   
231-818 6 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2011-02-06   
231-818 7 Cheboygan MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2010-02-25   
231-818 8 Cheboygan MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2009-03-07   
231-818 9 Cheboygan MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-819 A Tustin MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-819 0 Tustin MI   543C ONVOY, LLCV - MI 348   2014-11-13   
231-819 1 Tustin MI   543C ONVOY, LLCV - MI 348   2014-11-13   
231-819 2 Tustin MI   543C ONVOY, LLCV - MI 348   2016-03-22   
231-819 3 Tustin MI   543C ONVOY, LLCV - MI 348   2016-03-22   
231-819 4 Tustin MI   046L CLEAR RATE COMMUNICATIONS, LLC 348   2016-08-31   
231-819 5 Tustin MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2016-12-11   
231-819 6 Tustin MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2017-10-05   
231-819 7 Tustin MI   543C ONVOY, LLCV - MI 348   2014-11-05   
231-819 8 Tustin MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-819 9 Tustin MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-01-10   
231-821 A Holton MI HLTNMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-821 0 Holton MI   0695 FRONTIER NORTH, INC. - MI 348      
231-821 1 Holton MI   0695 FRONTIER NORTH, INC. - MI 348      
231-821 2 Holton MI   0695 FRONTIER NORTH, INC. - MI 348      
231-821 3 Holton MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-12   
231-821 4 Holton MI   3535 ACD TELECOM, INC. - MI 348   2005-02-11   
231-821 5 Holton MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-01-14   
231-821 6 Holton MI   543C ONVOY, LLCV - MI 348   2013-03-18   
231-821 7 Holton MI   318J COMCAST IP PHONE, LLC 348   2007-06-08   

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

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