Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-898 9 Carr MI CARRMIXADS0  0683 CARR TEL. CO. 348      
231-899 A Northport MI GDRPMIBLX8Z  2550 123.NET, INC. 348      
231-900 A Muskegon MI BRSPMI095MD  965H FRACTEL, LLC 348      
231-900 0 Muskegon MI BRSPMI095MD  965H FRACTEL, LLC 348   2019-07-07   
231-900 1 Muskegon MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2019-07-08   
231-900 2 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-07-11   
231-900 3 Muskegon MI GDRPMIBL40Z  318J COMCAST IP PHONE, LLC 348   2020-11-12   
231-900 4 Muskegon MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2020-06-28   
231-900 5 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2020-07-07   
231-900 6 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2020-07-07   
231-900 7 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2020-07-07   
231-900 8 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2019-12-24   
231-900 9 Muskegon MI BRSPMI095MD  965H FRACTEL, LLC 348   2019-07-07   
231-902 A Hart MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-903 A Muskegon MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-903 0 Muskegon MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2005-01-08   
231-903 1 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2006-07-08   
231-903 2 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2006-10-19   
231-903 3 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2006-12-05   
231-903 4 Muskegon MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-903 5 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-06-10   
231-903 6 Muskegon MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2012-06-28   
231-903 7 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-06-10   
231-903 8 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-06-10   
231-903 9 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2005-06-10   
231-907 A Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-907 0 Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-907 1 Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-11-03   
231-907 2 Ludington MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2011-05-14   
231-907 3 Ludington MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2011-11-02   
231-907 4 Ludington MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2016-05-13   
231-907 5 Ludington MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-11   
231-907 6 Ludington MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-11   
231-907 7 Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2016-08-25   
231-907 8 Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2014-10-09   
231-907 9 Ludington MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2010-07-11   
231-908 A McBain MI GDRPMIBLX8Z  2550 123.NET, INC. 348      
231-912 A Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-912 0 Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-912 1 Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2010-03-22   
231-912 4 Reed City MI BRSPMI096MD  145J TERRA NOVA TELECOM INC. 348   2023-06-24   
231-912 6 Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-11-30   
231-912 7 Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-01-23   
231-912 9 Reed City MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-08-09   
231-916 A Mancelona MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-916 0 Mancelona MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-916 1 Mancelona MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2005-02-11   
231-916 2 Mancelona MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-916 3 Mancelona MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2012-06-01   
231-916 4 Mancelona MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.