Local Calling Guide
Area code/prefix search
NPA: 406
[Rate centres in NPA 406]
[Dial plan for NPA 406]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-936
| 8 |
Clyde Park |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-936
| 9 |
Clyde Park |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-02-12 |
|
| 406-937
| A |
Sunburst |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-938
| A |
Alzada |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-938
| 0 |
Alzada |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-938
| 3 |
Alzada |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-938
| 4 |
Alzada |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-938
| 7 |
Alzada |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2021-08-27 |
|
| 406-938
| 8 |
Alzada |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-938
| 9 |
Alzada |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| A |
West Glendive |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 0 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 1 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 2 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 3 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 4 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 5 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-939
| 8 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-11-28 |
|
| 406-939
| 9 |
West Glendive |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-940
| A |
Molt |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-940
| 0 |
Molt |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-29 |
|
| 406-940
| 5 |
Molt |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2017-09-02 |
|
| 406-940
| 9 |
Molt |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2024-12-03 |
|
| 406-941
| A |
West Glendive |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-941
| 0 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-941
| 1 |
West Glendive |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2010-11-06 |
|
| 406-941
| 2 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-02-06 |
|
| 406-941
| 3 |
West Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2012-07-08 |
|
| 406-942
| A |
Glasgow |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-942
| 0 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2009-12-07 |
|
| 406-942
| 1 |
Glasgow |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2023-04-11 |
|
| 406-942
| 2 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-04-30 |
|
| 406-943
| A |
Sidney |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-943
| 0 |
Sidney |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-943
| 1 |
Sidney |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-943
| 2 |
Sidney |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-943
| 3 |
Sidney |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2016-11-28 |
|
| 406-943
| 4 |
Sidney |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-943
| 5 |
Sidney |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2015-02-25 |
|
| 406-943
| 6 |
Sidney |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-943
| 7 |
Sidney |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-12 |
|
| 406-943
| 8 |
Sidney |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-943
| 9 |
Sidney |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-944
| A |
Miles City |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-944
| 0 |
Miles City |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-944
| 1 |
Miles City |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-10-20 |
|
| 406-944
| 2 |
Miles City |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-944
| 3 |
Miles City |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2010-10-01 |
|
| 406-944
| 4 |
Miles City |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-944
| 5 |
Miles City |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: VoIP Much Phone Company
Like this site? We accept donations via PayPal.