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.

OCN: 9415 LEVEL 3 COMMUNICATIONS, LLC - MT

1 2 3 4 5 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-203 A Missoula MT MSSLMTMA0MD  648      
406-203 0 Missoula MT MSSLMTMA0MD  648      
406-203 1 Missoula MT MSSLMTMA0MD  648      
406-203 3 Missoula MT MSSLMTMA0MD  648   2012-02-26   
406-203 4 Missoula MT MSSLMTMA0MD  648      
406-203 5 Missoula MT MSSLMTMA0MD  648   2012-08-25   
406-203 9 Missoula MT MSSLMTMA0MD  648   2014-10-24   
406-204 A Helena MT MSSLMTMA0MD  648      
406-204 0 Helena MT MSSLMTMA0MD  648      
406-204 3 Helena MT MSSLMTMA0MD  648   2011-11-25   
406-204 4 Helena MT MSSLMTMA0MD  648      
406-205 A Great Falls MT MSSLMTMA0MD  648      
406-205 0 Great Falls MT MSSLMTMA0MD  648      
406-205 1 Great Falls MT MSSLMTMA0MD  648      
406-205 2 Great Falls MT MSSLMTMA0MD  648      
406-205 3 Great Falls MT MSSLMTMA0MD  648      
406-205 4 Great Falls MT MSSLMTMA0MD  648      
406-205 5 Great Falls MT MSSLMTMA0MD  648      
406-205 6 Great Falls MT MSSLMTMA0MD  648      
406-205 7 Great Falls MT MSSLMTMA0MD  648      
406-205 8 Great Falls MT MSSLMTMA0MD  648      
406-206 A Billings MT BLNGMTWE6MD  650      
406-213 A Colstrip MT BLNGMTWE6MD  650      
406-213 0 Colstrip MT BLNGMTWE6MD  650      
406-213 4 Colstrip MT BLNGMTWE6MD  650      
406-218 2 Missoula MT MSSLMTMA0MD  648   2016-04-21   
406-218 4 Missoula MT MSSLMTMA0MD  648   2022-08-27   
406-219 0 Bozeman MT BLNGMTWE6MD  650   2006-10-24   
406-226 3 East Glacier Park MT MSSLMTMA0MD  648   2023-02-27   
406-233 6 Miles City MT BLNGMTWE6MD  650   2005-02-21   
406-235 1 Wolf Creek MT MSSLMTMA0MD  648   2006-11-08   
406-262 6 Havre MT MSSLMTMA0MD  648   2023-01-13   
406-278 6 Conrad MT MSSLMTMA0MD  648   2006-07-10   
406-282 0 Manhattan MT BLNGMTWE6MD  650   2004-11-13   
406-283 3 Libby MT CRALIDXXKMD  960   2017-04-01   
406-285 2 Three Forks MT BLNGMTWE6MD  650   2004-11-13   
406-290 0 Columbus MT BLNGMTWE6MD  650   2007-12-17   
406-290 1 Columbus MT BLNGMTWE6MD  650   2008-01-28   
406-290 2 Columbus MT BLNGMTWE6MD  650   2008-02-04   
406-292 2 Joplin MT MSSLMTMA0MD  648   2019-01-18   
406-295 8 Troy MT CRALIDXXKMD  960   2017-04-01   
406-298 1 Columbus MT BLNGMTWE6MD  650   2008-02-29   
406-299 A Butte MT MSSLMTMA0MD  648      
406-299 8 Butte MT MSSLMTMA0MD  648   2013-02-28   
406-299 9 Butte MT MSSLMTMA0MD  648      
406-301 5 Malta MT MSSLMTMA0MD  648   2019-01-11   
406-302 3 Wolf Creek MT MSSLMTMA0MD  648   2019-06-28   
406-305 1 White Sulphur Springs MT BLNGMTWE6MD  650   2019-01-11   
406-308 8 Cascade MT MSSLMTMA0MD  648   2023-04-24   
406-309 6 Kalispell MT MSSLMTMA0MD  648   2018-08-26   

1 2 3 4 5 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.