Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-897 A Columbia Falls MT KLSLMTAZ1MD  648      
406-897 2 Columbia Falls MT KLSLMTAZ1MD  648   2006-04-21   
406-897 5 Columbia Falls MT KLSLMTAZ1MD  648   2015-11-12   
406-898 A Bozeman MT BZMNMTEF2MD  650      
406-898 1 Bozeman MT BZMNMTEF2MD  650   2009-05-22   
406-924 2 Belgrade MT BZMNMTEF2MD  650   2006-12-08   
406-924 6 Belgrade MT BZMNMTEF2MD  650   2005-06-27   
406-925 5 Dillon MT HLNAMTHH5MD  648   2008-11-21   
406-926 A Missoula MT MSSLMTEH4MD  648      
406-926 1 Missoula MT MSSLMTEH4MD  648   2011-03-06   
406-926 2 Missoula MT MSSLMTEH4MD  648   2011-08-21   
406-926 3 Missoula MT MSSLMTEH4MD  648   2011-12-03   
406-926 6 Missoula MT MSSLMTEH4MD  648   2013-11-11   
406-932 7 Big Timber MT BLNGMT93HMD  650   2017-05-20   
406-945 9 Havre MT HLNAMTHH5MD  648   2008-11-21   
406-952 0 Great Falls MT HLNAMTHH5MD  648   2007-02-07   
406-952 1 Great Falls MT HLNAMTHH5MD  648   2008-06-20   
406-952 4 Great Falls MT HLNAMTHH5MD  648   2005-07-17   
406-961 9 Hamilton MT MSSLMTEH4MD  648   2008-11-21   
406-967 1 Worden MT   650   2025-05-06   
406-969 1 Billings MT BLNGMT93HMD  650   2011-03-06   
406-969 2 Billings MT BLNGMT93HMD  650   2011-07-21   
406-969 3 Billings MT BLNGMT93HMD  650   2011-10-13   
406-969 4 Billings MT BLNGMT93HMD  650   2012-01-26   
406-969 5 Billings MT BLNGMT93HMD  650   2012-01-26   
406-969 6 Billings MT BLNGMT93HMD  650   2012-05-03   
406-988 0 Dillon MT HLNAMTHH5MD  648   2006-03-24   
406-996 A Helena MT HLNAMTHH5MD  648      
406-996 1 Helena MT HLNAMTHH5MD  648   2011-03-10   
410-623 9 Marion MD SLBRMDSBX7Y  242   2020-09-25   
413-203 1 Easthampton MA   126   2005-11-27   
413-203 2 Easthampton MA   126   2012-07-22   
413-203 5 Easthampton MA   126   2007-12-09   
413-213 0 Belchertown MA   126   2005-11-27   
413-213 1 Belchertown MA   126   2010-01-15   
413-224 0 East Longmeadow MA   126   2019-04-21   
413-224 1 East Longmeadow MA   126   2005-11-27   
413-224 2 East Longmeadow MA   126   2011-06-24   
413-232 5 West Stockbridge MA   126   2016-06-15   
413-245 1 Brimfield MA   126   2005-11-27   
413-271 1 Springfield MA   126   2005-11-27   
413-279 1 Wilbraham MA   126   2005-11-27   
413-279 2 Wilbraham MA   126   2015-11-12   
413-279 3 Wilbraham MA   126   2012-06-21   
413-300 8 Dalton MA   126   2018-11-09   
413-315 8 Holyoke MA   126   2006-12-11   
413-315 9 Holyoke MA   126   2005-11-27   
413-324 1 Palmer MA   126   2005-11-27   
413-331 A Chicopee MA   126   2025-05-06   
413-331 0 Chicopee MA   126   2005-11-27   
413-331 2 Chicopee MA   126   2006-09-03   
413-331 3 Chicopee MA   126   2008-03-26   
413-331 4 Chicopee MA   126   2011-06-24   
413-331 5 Chicopee MA   126   2013-09-20   
413-338 1 Warren MA   126   2006-05-26   
413-353 5 Housatonic MA   126   2016-06-15   
413-387 0 Northampton MA   126   2005-11-27   
413-437 8 Holyoke MA   126   2011-10-21   
413-461 1 Amherst MA   126   2005-11-27   
413-496 3 Pittsfield MA   126   2016-07-03   
413-566 1 Hampden MA   126   2005-11-27   
413-600 2 Stockbridge MA   126   2016-06-15   
413-610 0 Ludlow MA   126   2005-11-27   
413-610 1 Ludlow MA   126   2009-10-17   
413-610 2 Ludlow MA   126   2015-05-17   
413-643 3 Gilbertville MA   126   2022-06-15   
413-655 4 Hinsdale MA   126   2016-06-15   
423-202 3 Johnson City TN BUVLTNAX0MD  956   2005-01-23   
423-202 7 Johnson City TN BUVLTNAX0MD  956   2006-04-19   
423-212 0 Blountville TN BUVLTNAX0MD  956   2005-01-23   
423-212 2 Blountville TN BUVLTNAX0MD  956   2006-12-10   
423-213 5 Elizabethton TN BUVLTNAX0MD  956   2005-01-28   
423-217 0 Bristol TN BUVLTNAX0MD  956   2005-01-23   
423-217 1 Bristol TN BUVLTNAX0MD  956   2006-04-16   
423-228 4 South Pittsburg TN   472   2006-09-11   
423-237 6 Newport TN MRTWTN281MD  474   2005-05-23   
423-256 2 Church Hill TN BUVLTNAX0MD  956   2005-01-23   
423-256 3 Church Hill TN BUVLTNAX0MD  956   2006-12-10   
423-262 8 Johnson City TN BUVLTNAX0MD  956   2007-02-19   
423-264 8 Vonore TN MRTWTN281MD  474   2023-05-10   
423-268 2 Johnson City TN BUVLTNAX0MD  956   2013-03-17   
423-271 6 Sweetwater TN MRTWTN281MD  474   2012-05-31   
423-281 A Butler TN BUVLTNAX0MD  956      
423-281 1 Butler TN BUVLTNAX0MD  956   2011-12-16   
423-285 5 Dayton TN   472   2006-06-03   
423-293 0 Rogersville TN MRTWTN281MD  474   2005-05-23   
423-293 3 Rogersville TN MRTWTN281MD  474   2008-02-20   
423-297 1 Elizabethton TN BUVLTNAX0MD  956   2006-11-10   
423-328 9 Johnson City TN BUVLTNAX0MD  956   2014-05-12   
423-343 9 Kingsport TN BUVLTNAX0MD  956   2008-04-18   
423-349 8 Sullivan Gardens TN BUVLTNAX0MD  956   2005-01-23   
423-353 4 Morristown TN MRTWTN281MD  474   2013-03-08   
423-390 1 Kingsport TN BUVLTNAX0MD  956   2014-02-11   
423-391 7 Bluff City TN BUVLTNAX0MD  956   2005-01-23   
423-391 8 Bluff City TN BUVLTNAX0MD  956   2011-10-23   
423-393 A Bulls Gap TN MRTWTN281MD  474   2025-01-23   
423-393 1 Bulls Gap TN MRTWTN281MD  474   2005-05-23   
423-398 5 Kingsport TN BUVLTNAX0MD  956   2011-09-10   
423-406 1 Midway (Sullivan) TN BUVLTNAX0MD  956   2008-05-18   
423-428 9 Dayton TN   472   2008-03-08   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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