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.

Switch: BLNGMTWE6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-242 4 Lake WY 9416 LEVEL 3 COMMUNICATIONS, LLC - WY 650   2016-08-11   
307-344 8 Mammoth WY 9416 LEVEL 3 COMMUNICATIONS, LLC - WY 650      
307-888 2 Old Faithful WY 9416 LEVEL 3 COMMUNICATIONS, LLC - WY 650   2023-01-27   
406-206 A Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-213 A Colstrip MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-213 0 Colstrip MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-213 4 Colstrip MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-219 0 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-10-24   
406-233 6 Miles City MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-02-21   
406-282 0 Manhattan MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-285 2 Three Forks MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-290 0 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-12-17   
406-290 1 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-01-28   
406-290 2 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-02-04   
406-298 1 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-02-29   
406-305 1 White Sulphur Springs MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-01-11   
406-320 3 Roundup MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-10-10   
406-322 2 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-322 3 Columbus MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-01-06   
406-328 3 Absarokee MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-03-29   
406-333 0 Livingston MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-356 5 Forsyth MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-05-21   
406-365 1 Glendive MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-02-21   
406-445 0 Red Lodge MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-445 1 Red Lodge MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-04-19   
406-477 1 Lame Deer MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2018-08-27   
406-500 3 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-08-23   
406-530 A Laurel MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-530 2 Laurel MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-01-05   
406-530 6 Laurel MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-05-13   
406-534 0 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-09-01   
406-545 A Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-545 0 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-12-29   
406-545 1 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-06-19   
406-545 2 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-06-19   
406-545 3 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-08-13   
406-545 4 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-545 5 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-09-17   
406-545 6 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-09-26   
406-551 A Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-551 4 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-551 6 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-01-14   
406-551 7 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2014-10-24   
406-551 9 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2011-11-25   
406-578 0 Wilsall MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-601 8 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2022-11-04   
406-602 8 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2020-08-08   
406-613 7 Bozeman MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2022-09-24   
406-623 4 Hardin MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-04-09   
406-628 0 Laurel MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-630 A Sidney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-630 4 Sidney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-04-09   
406-632 8 Harlowton MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-01-11   
406-646 2 West Yellowstone MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-662 0 Bridger MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-668 0 Fromberg MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-686 0 Clyde Park MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-747 3 Fairview MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-748 7 Colstrip MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2005-02-21   
406-763 0 Gallatin Gateway MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-765 5 Plentywood MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-08-29   
406-795 1 Wibaux MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-11-28   
406-838 0 Cooke City MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-848 0 Gardiner MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-891 4 Baker MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2024-07-12   
406-901 2 Billings MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2021-07-23   
406-924 A Belgrade MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-924 1 Belgrade MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2009-03-19   
406-924 4 Belgrade MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-12-20   
406-931 1 Big Timber MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-01-11   
406-942 1 Glasgow MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-04-11   
406-943 A Sidney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-943 0 Sidney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-943 4 Sidney MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-944 A Miles City MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-944 0 Miles City MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-944 4 Miles City MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 A Livingston MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 0 Livingston MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 4 Livingston MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 A Glendive MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 0 Glendive MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 4 Glendive MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 0 Hardin MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 4 Hardin MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-957 3 Terry MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-02-27   
406-962 0 Joliet MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-962 1 Joliet MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-07-17   
406-974 6 Circle MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-10-10   
406-983 1 Ashland MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2018-08-27   
406-993 8 Big Sky MT 9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-02-14   
701-505 7 East Sidney ND 8054 LEVEL 3 COMMUNICATIONS, LLC - ND 650   2023-01-08   
701-940 6 East Fairview ND 8054 LEVEL 3 COMMUNICATIONS, LLC - ND 650   2023-01-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.