Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-203 A Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-203 0 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-203 1 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-203 3 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2012-02-26   
406-203 4 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-203 5 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2012-08-25   
406-203 9 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2014-10-24   
406-204 A Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-204 0 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-204 3 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-11-25   
406-204 4 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 A Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 0 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 1 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 2 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 3 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 4 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 5 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 6 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 7 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-205 8 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-218 2 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-04-21   
406-218 4 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2022-08-27   
406-226 3 East Glacier Park MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-235 1 Wolf Creek MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2006-11-08   
406-262 6 Havre MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-01-13   
406-278 6 Conrad MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2006-07-10   
406-292 2 Joplin MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-18   
406-299 A Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-299 8 Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2013-02-28   
406-299 9 Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-301 5 Malta MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-11   
406-302 3 Wolf Creek MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-06-28   
406-308 8 Cascade MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-24   
406-309 6 Kalispell MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2018-08-26   
406-317 7 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-09-19   
406-353 6 Harlem MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-11   
406-357 1 Chinook MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-11-28   
406-378 8 Big Sandy MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-10-17   
406-382 3 Superior MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-27   
406-387 2 Hungry Horse MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-393 4 Somers MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-01-21   
406-394 6 North Havre MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-18   
406-415 2 Deer Lodge MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-16   
406-417 3 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-05   
406-419 1 Victor MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-05-01   
406-420 0 Bigfork MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-06-09   
406-434 6 Shelby MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-02-21   
406-438 4 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-01   
406-466 7 Choteau MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-10-17   
406-476 2 Dutton MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2017-10-20   
406-481 3 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-06-19   
406-496 7 Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-05-19   
406-501 2 Whitehall MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-10-31   
406-504 A Fairfield MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-504 2 Fairfield MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-05-19   
406-507 A Whitefish MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-507 1 Whitefish MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-21   
406-508 A Frenchtown MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-508 2 Frenchtown MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2012-04-01   
406-512 A Boulder MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-512 1 Boulder MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-25   
406-519 2 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-06-27   
406-550 5 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2022-03-25   
406-552 A Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-552 0 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-01-14   
406-552 1 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-01-26   
406-552 4 Missoula MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-558 2 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2014-10-24   
406-558 3 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-10-02   
406-558 4 Helena MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-559 2 Anaconda MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-16   
406-564 A Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 1 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-06-03   
406-564 4 Great Falls MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-565 A Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-565 4 Butte MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-573 1 Browning MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2015-06-30   
406-609 4 Kalispell MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-10-04   
406-622 8 Fort Benton MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-03-29   
406-625 3 Stevensville MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-16   
406-626 3 Frenchtown MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2006-11-08   
406-691 4 Anaconda MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-08-09   
406-693 2 Warm Springs MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-708 4 Lewistown MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-04-09   
406-732 3 St Mary MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2014-05-24   
406-759 2 Chester MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-11-25   
406-802 6 Hamilton MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2015-09-10   
406-821 8 Darby MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-05-06   
406-826 8 Plains MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-27   
406-844 6 Lakeside MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-849 3 Elmo MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-854 3 Marion MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-873 8 Cut Bank MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-02-21   
406-881 1 Olney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-884 2 Polson MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2015-10-23   
406-886 4 Swan Lake MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-08   
406-887 5 Finley Point MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-888 1 West Glacier MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-24   
406-900 A Ennis MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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