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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
231-821 8 Holton MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-15   
231-821 9 Holton MI   0695 FRONTIER NORTH, INC. - MI 348      
231-822 A Beulah MI   817J INTERACTIVE SERVICES NETWORK, INC. 348      
231-823 A Stanwood MI STWDMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-823 2 Stanwood MI   0695 FRONTIER NORTH, INC. - MI 348      
231-823 4 Stanwood MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-09-26   
231-823 5 Stanwood MI   3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-823 7 Stanwood MI   543C ONVOY, LLCV - MI 348   2013-03-18   
231-823 8 Stanwood MI   0695 FRONTIER NORTH, INC. - MI 348      
231-823 9 Stanwood MI   0695 FRONTIER NORTH, INC. - MI 348      
231-824 A Manton MI MNTNMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-824 0 Manton MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-12   
231-824 1 Manton MI   3535 ACD TELECOM, INC. - MI 348   2005-02-17   
231-824 2 Manton MI   829J PAETEC ITEL, LLC 348   2006-01-12   
231-824 3 Manton MI   9323 MICHIGAN BELL TEL CO 348      
231-824 4 Manton MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2007-02-25   
231-824 5 Manton MI   817J INTERACTIVE SERVICES NETWORK, INC. 348   2005-09-02   
231-824 6 Manton MI   9323 MICHIGAN BELL TEL CO 348      
231-824 7 Manton MI   543C ONVOY, LLCV - MI 348   2012-06-01   
231-824 8 Manton MI   829J PAETEC ITEL, LLC 348   2004-02-10   
231-824 9 Manton MI   9323 MICHIGAN BELL TEL CO 348      
231-825 A McBain MI MCBNMIMNRS1  9323 MICHIGAN BELL TEL CO 348      
231-825 0 McBain MI   9323 MICHIGAN BELL TEL CO 348      
231-825 1 McBain MI   829J PAETEC ITEL, LLC 348   2004-02-10   
231-825 2 McBain MI   9323 MICHIGAN BELL TEL CO 348      
231-825 3 McBain MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-12   
231-825 4 McBain MI   9323 MICHIGAN BELL TEL CO 348      
231-825 6 McBain MI   516C AT&T CORP. 348   2011-08-23   
231-825 7 McBain MI   3535 ACD TELECOM, INC. - MI 348   2005-02-17   
231-825 8 McBain MI   9323 MICHIGAN BELL TEL CO 348      
231-825 9 McBain MI   543C ONVOY, LLCV - MI 348   2012-06-01   
231-826 A Falmouth MI FLMOMIXIDS0  0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 0 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 1 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 2 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 3 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 4 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 5 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 6 Falmouth MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2015-10-18   
231-826 7 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 8 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-826 9 Falmouth MI   0705 BRIGHTSPEED OF NORTHERN MICHIGAN, INC 348      
231-828 A Twin Lake MI TNLKMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-828 0 Twin Lake MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2007-02-25   
231-828 1 Twin Lake MI   543C ONVOY, LLCV - MI 348   2014-10-28   
231-828 2 Twin Lake MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-13   
231-828 3 Twin Lake MI   3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-828 4 Twin Lake MI   0695 FRONTIER NORTH, INC. - MI 348      
231-828 5 Twin Lake MI   0695 FRONTIER NORTH, INC. - MI 348      
231-828 6 Twin Lake MI   0695 FRONTIER NORTH, INC. - MI 348      
231-828 7 Twin Lake MI   318J COMCAST IP PHONE, LLC 348   2007-06-08   
231-828 8 Twin Lake MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-01-27   
231-828 9 Twin Lake MI   543C ONVOY, LLCV - MI 348   2013-03-18   
231-829 A Tustin MI TUSTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-829 0 Tustin MI   543C ONVOY, LLCV - MI 348   2012-06-01   
231-829 1 Tustin MI   3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-829 2 Tustin MI   516C AT&T CORP. 348   2011-08-23   
231-829 3 Tustin MI   9323 MICHIGAN BELL TEL CO 348      
231-829 4 Tustin MI   145J TERRA NOVA TELECOM INC. 348   2024-11-15   
231-829 5 Tustin MI   145J TERRA NOVA TELECOM INC. 348   2021-01-19   
231-829 6 Tustin MI   829J PAETEC ITEL, LLC 348   2004-02-12   
231-829 7 Tustin MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2005-04-01   
231-829 8 Tustin MI   624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-829 9 Tustin MI   9323 MICHIGAN BELL TEL CO 348      
231-830 A Muskegon MI MSKHMIXPDS0  0695 FRONTIER NORTH, INC. - MI 348      
231-830 0 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-830 1 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-830 2 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-830 3 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-830 4 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-04-15   
231-830 5 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-07-08   
231-830 6 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-07-28   
231-830 7 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-10-01   
231-830 8 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-830 9 Muskegon MI   0695 FRONTIER NORTH, INC. - MI 348      
231-831 A East Jordan MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-831 0 East Jordan MI   543C ONVOY, LLCV - MI 348   2023-08-06   
231-831 1 East Jordan MI   145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-831 2 East Jordan MI   624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-831 6 East Jordan MI   624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-831 8 East Jordan MI   543C ONVOY, LLCV - MI 348   2022-04-17   
231-831 9 East Jordan MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2023-10-28   
231-832 A Reed City MI RDCYMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-833 A Wolverine MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-833 0 Wolverine MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2005-06-02   
231-833 1 Wolverine MI   543C ONVOY, LLCV - MI 348   2021-03-06   
231-833 2 Wolverine MI   543C ONVOY, LLCV - MI 348   2015-06-15   
231-833 3 Wolverine MI   543C ONVOY, LLCV - MI 348   2015-06-15   
231-833 4 Wolverine MI   543C ONVOY, LLCV - MI 348   2015-06-15   
231-833 5 Wolverine MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2017-05-08   
231-833 6 Wolverine MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-31   
231-833 7 Wolverine MI   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-19   
231-833 8 Wolverine MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-834 A Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 0 Grant MI   9323 MICHIGAN BELL TEL CO 348      
231-834 1 Grant MI   9323 MICHIGAN BELL TEL CO 348      
231-834 2 Grant MI   046L CLEAR RATE COMMUNICATIONS, LLC 348   2011-06-22   
231-834 3 Grant MI   991E BANDWIDTH.COM CLEC, LLC - MI 348   2022-10-30   
231-834 4 Grant MI   543C ONVOY, LLCV - MI 348   2016-03-21   
231-834 5 Grant MI   9323 MICHIGAN BELL TEL CO 348      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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