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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-367 5 Wolverine MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-367 6 Wolverine MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-367 7 Wolverine MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-08-26   
231-367 8 Wolverine MI BRSPMI097MD  516J TON80 COMMUNICATIONS, LLC 348   2021-09-09   
231-368 A Baldwin MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-369 A South Boardman MI MSCKMIXIRS0  0704 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-370 A Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-370 0 Muskegon MI GDRPMIBL31Z  5562 METROPCS, INC. 348   2021-11-06   
231-370 1 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348   2023-08-01   
231-370 2 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348   2023-08-01   
231-370 3 Muskegon MI BRSPMI09AMD  490J DISH WIRELESS, LLC 348   2023-06-25   
231-370 5 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-11-15   
231-370 6 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-11-15   
231-370 7 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-11-15   
231-370 8 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-11-05   
231-370 9 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-11-05   
231-371 A Tustin MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-371 0 Tustin MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-11-06   
231-371 1 Tustin MI BRSPMI096MD  145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-371 2 Tustin MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2025-01-18   
231-372 A Evart MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-373 A Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 0 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 1 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 2 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2008-05-05   
231-373 3 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2008-05-05   
231-373 4 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2008-05-05   
231-373 5 Petoskey MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2011-02-25   
231-373 6 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 7 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 8 Petoskey MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-373 9 Petoskey MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2010-01-29   
231-374 A Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-374 0 Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-07-08   
231-374 1 Shelby MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-374 2 Shelby MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-374 4 Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-08-15   
231-374 5 Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-08-15   
231-374 6 Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-01-04   
231-374 7 Shelby MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-08-16   
231-374 8 Shelby MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-03-04   
231-374 9 Shelby MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348   2023-08-12   
231-375 A Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-375 0 Muskegon MI GDRPMIBL40Z  318J COMCAST IP PHONE, LLC 348   2015-11-09   
231-375 1 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2018-02-04   
231-375 2 Muskegon MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2014-06-13   
231-375 3 Muskegon MI GDRPMIBL31Z  5562 METROPCS, INC. 348   2014-03-07   
231-375 4 Muskegon MI GDRPMIBL31Z  5562 METROPCS, INC. 348   2014-03-07   
231-375 5 Muskegon MI GDRPMIBL40Z  318J COMCAST IP PHONE, LLC 348   2014-02-15   
231-375 6 Muskegon MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-07-30   
231-375 7 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2014-08-14   
231-375 8 Muskegon MI GDRPMIBL40Z  318J COMCAST IP PHONE, LLC 348   2015-03-27   
231-375 9 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2014-09-01   
231-376 A Twin Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-376 0 Twin Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2024-12-09   
231-376 6 Twin Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-09-03   
231-377 A Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 0 Clam River MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2004-10-22   
231-377 1 Clam River MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2008-12-23   
231-377 2 Clam River MI ANTSMIADPS0  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-377 3 Clam River MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2015-11-05   
231-377 4 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 5 Clam River MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-16   
231-377 6 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 7 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-377 8 Clam River MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-04-01   
231-377 9 Clam River MI CLRVMIXHRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-378 A Copemish Thompsonville MI MSCKMIXIRS0  0704 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-379 A Onekama MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-379 0 Onekama MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-10-29   
231-379 1 Onekama MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-12   
231-379 2 Onekama MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-12-29   
231-379 9 Onekama MI BRSPMI09FMD  145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-380 A Newaygo MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-380 0 Newaygo MI BRSPMI09FMD  145J TERRA NOVA TELECOM INC. 348   2024-02-14   
231-380 1 Newaygo MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-12   
231-380 3 Newaygo MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-04-17   
231-380 8 Newaygo MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2022-02-24   
231-380 9 Newaygo MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2022-02-24   
231-381 A White Cloud MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-381 0 White Cloud MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2021-06-27   
231-381 1 White Cloud MI   515J IP HORIZON LLC 348   2021-12-31   
231-381 3 White Cloud MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-07-02   
231-381 7 White Cloud MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2023-03-09   
231-383 A Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-383 0 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-383 1 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-383 2 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2006-02-04   
231-383 3 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2007-01-18   
231-383 4 Beulah MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-383 5 Beulah MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2011-05-14   
231-383 6 Beulah MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2012-07-06   
231-383 7 Beulah MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2012-12-29   
231-383 8 Beulah MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-04-01   
231-383 9 Beulah MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2020-08-24   
231-384 A Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-384 0 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-384 1 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-384 2 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-384 3 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2006-01-07   

<< 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 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.