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.
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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
906-204 7 Ishpeming MI NGNEMIAM7MD  342   2012-05-28   
906-208 1 Au Train MI NGNEMIAM7MD  342   2018-05-14   
906-212 2 Escanaba MI NGNEMIAM7MD  342   2017-07-23   
906-220 1 North Land O'Lakes MI NGNEMIAM7MD  342   2025-10-26   
906-229 3 Wakefield MI NGNEMIAM7MD  342   2007-04-23   
906-233 7 Escanaba MI NGNEMIAM7MD  342   2010-09-06   
906-240 A Kinross MI NGNEMIAM7MD  342      
906-240 1 Kinross MI NGNEMIAM7MD  342      
906-243 1 Mass MI NGNEMIAM7MD  342   2019-09-03   
906-259 A Sault Ste Marie MI NGNEMIAM7MD  342      
906-259 0 Sault Ste Marie MI NGNEMIAM7MD  342   2007-10-21   
906-259 1 Sault Ste Marie MI NGNEMIAM7MD  342   2009-05-28   
906-259 7 Sault Ste Marie MI NGNEMIAM7MD  342   2013-10-07   
906-267 1 Curtis MI NGNEMIAM7MD  342   2025-02-16   
906-273 A Marquette MI NGNEMIAM7MD  342      
906-273 0 Marquette MI NGNEMIAM7MD  342   2007-04-23   
906-273 1 Marquette MI NGNEMIAM7MD  342   2008-09-04   
906-273 2 Marquette MI NGNEMIAM7MD  342   2012-07-22   
906-285 7 Ironwood MI NGNEMIAM7MD  342   2012-05-28   
906-286 4 Manistique MI NGNEMIAM7MD  342   2012-10-05   
906-293 7 Newberry MI NGNEMIAM7MD  342   2019-08-20   
906-295 2 Powers MI NGNEMIAM7MD  342   2010-10-07   
906-296 2 Lake Linden MI NGNEMIAM7MD  342   2007-04-23   
906-310 4 Cedarville MI NGNEMIAM7MD  342   2025-02-16   
906-316 1 Engadine MI NGNEMIAM7MD  342   2025-02-16   
906-346 2 Gwinn MI NGNEMIAM7MD  342   2007-04-23   
906-349 2 Pickford MI NGNEMIAM7MD  342   2025-02-16   
906-356 2 Rock MI NGNEMIAM7MD  342   2007-09-29   
906-358 2 Watersmeet MI NGNEMIAM7MD  342   2007-09-29   
906-359 2 Perkins MI NGNEMIAM7MD  342   2007-09-29   
906-364 7 Ironwood MI NGNEMIAM7MD  342   2007-04-23   
906-365 5 Bergland MI NGNEMIAM7MD  342   2007-09-29   
906-367 7 Iron River MI NGNEMIAM7MD  342   2025-10-05   
906-374 2 Stephenson MI NGNEMIAM7MD  342   2025-10-05   
906-375 0 Crystal Falls MI NGNEMIAM7MD  342   2025-08-10   
906-382 1 Brimley MI NGNEMIAM7MD  342   2020-09-24   
906-390 8 Ontonagon MI NGNEMIAM7MD  342   2019-09-03   
906-391 8 Bruce Crossing MI NGNEMIAM7MD  342   2020-09-24   
906-395 3 Baraga MI NGNEMIAM7MD  342   2019-06-04   
906-397 2 Carney MI NGNEMIAM7MD  342   2025-07-31   
906-401 A Negaunee MI NGNEMIAM7MD  342      
906-401 0 Negaunee MI NGNEMIAM7MD  342   2007-05-10   
906-412 1 White Pine MI NGNEMIAM7MD  342   2019-09-03   
906-416 1 Rockland MI NGNEMIAM7MD  342   2020-09-24   
906-420 8 Gladstone MI NGNEMIAM7MD  342   2007-04-23   
906-421 1 Skandia MI NGNEMIAM7MD  342   2018-05-14   
906-422 2 Mackinac Island MI NGNEMIAM7MD  342   2025-10-05   
906-424 A Menominee MI NGNEMIAM7MD  342      
906-424 4 Menominee MI NGNEMIAM7MD  342   2005-11-18   
906-435 8 Chatham MI NGNEMIAM7MD  342   2018-05-14   
906-441 1 Munising MI NGNEMIAM7MD  342   2020-09-24   
906-442 A Rudyard MI NGNEMIAM7MD  342      
906-442 1 Rudyard MI NGNEMIAM7MD  342      
906-474 2 Rapid River MI NGNEMIAM7MD  342   2007-04-23   
906-498 3 Hermansville MI NGNEMIAM7MD  342   2010-10-07   
906-522 1 Ewen MI NGNEMIAM7MD  342   2019-09-03   
906-523 5 Houghton MI NGNEMIAM7MD  342   2007-04-23   
906-523 7 Houghton MI NGNEMIAM7MD  342   2010-09-06   
906-542 5 Channing MI NGNEMIAM7MD  342   2016-06-12   
906-553 7 Escanaba MI NGNEMIAM7MD  342   2007-04-23   
906-563 2 Norway MI NGNEMIAM7MD  342   2007-09-29   
906-663 2 Bessemer MI NGNEMIAM7MD  342   2007-04-23   
906-723 3 Bark River MI NGNEMIAM7MD  342   2007-04-23   
906-738 1 Wallace MI NGNEMIAM7MD  342   2025-10-05   
906-822 9 Amasa MI NGNEMIAM7MD  342   2025-10-05   
906-828 1 Iron Mountain MI NGNEMIAM7MD  342   2007-04-23   
906-828 2 Iron Mountain MI NGNEMIAM7MD  342   2012-04-23   
906-828 7 Iron Mountain MI NGNEMIAM7MD  342   2019-08-21   
906-934 2 Calumet MI NGNEMIAM7MD  342   2007-04-23   
906-984 2 St Ignace MI NGNEMIAM7MD  342   2007-06-18   
909-244 0 Upland CA HSPRCABB2MD  730   2007-05-26   
909-244 9 Upland CA HSPRCABB2MD  730   2007-11-02   
909-274 A Diamond Bar CA NRWLCA142MD  730      
909-274 2 Diamond Bar CA NRWLCA142MD  730   2009-10-19   
909-274 4 Diamond Bar CA NRWLCA142MD  730   2009-10-19   
909-274 5 Diamond Bar CA NRWLCA142MD  730   2009-10-19   
909-274 6 Diamond Bar CA NRWLCA142MD  730   2009-10-19   
909-281 4 Big Bear City CA HSPRCABB2MD  730   2012-08-07   
909-294 5 Upland CA HSPRCABB2MD  730   2011-04-08   
909-317 2 Etiwanda CA HSPRCABB2MD  730   2016-07-01   
909-324 1 Running Springs CA HSPRCABB2MD  730   2015-04-25   
909-352 6 Marshall CA HSPRCABB2MD  730   2013-06-03   
909-360 1 Upland CA HSPRCABB2MD  730   2013-03-27   
909-366 0 Big Bear Lake CA HSPRCABB2MD  730   2005-03-01   
909-415 1 Big Bear Lake CA HSPRCABB2MD  730   2018-05-17   
909-485 1 Arrowhead CA HSPRCABB2MD  730   2014-04-21   
909-493 1 Upland CA HSPRCABB2MD  730   2014-06-06   
909-509 3 Ontario CA HSPRCABB2MD  730   2006-03-13   
909-527 3 Upland CA HSPRCABB2MD  730   2006-10-16   
909-527 4 Upland CA HSPRCABB2MD  730   2009-03-09   
909-547 0 Big Bear City CA HSPRCABB2MD  730   2005-03-01   
909-547 6 Big Bear City CA HSPRCABB2MD  730   2006-11-10   
909-589 0 Crestline CA HSPRCABB2MD  730   2005-03-01   
909-589 2 Crestline CA HSPRCABB2MD  730   2010-04-23   
909-612 7 Diamond Bar CA NRWLCA142MD  730   2005-10-27   
909-652 A Upland CA HSPRCABB2MD  730      
909-652 0 Upland CA HSPRCABB2MD  730   2006-05-29   
909-683 6 Marshall CA HSPRCABB2MD  730   2016-08-25   
909-698 1 Crestline CA HSPRCABB2MD  730   2018-09-26   
909-726 1 Marshall CA HSPRCABB2MD  730   2011-11-06   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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