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 |
| 406-961
| 0 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 1 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 2 |
Hamilton |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-12-08 |
|
| 406-961
| 3 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 4 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 5 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 6 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 7 |
Hamilton |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2011-01-23 |
|
| 406-961
| 8 |
Hamilton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-961
| 9 |
Hamilton |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2008-11-21 |
|
| 406-962
| A |
Joliet |
MT |
JOLTMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 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 |
|
| 406-962
| 2 |
Joliet |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2020-11-19 |
|
| 406-962
| 3 |
Joliet |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-962
| 4 |
Joliet |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-962
| 5 |
Joliet |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2008-11-26 |
|
| 406-962
| 6 |
Joliet |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2010-02-20 |
|
| 406-962
| 7 |
Joliet |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-962
| 9 |
Joliet |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-963
| A |
Froid Rural |
MT |
FRODMT01RS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-963
| 2 |
Froid Rural |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-963
| 7 |
Froid Rural |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-964
| A |
Great Falls |
MT |
VGHNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-964
| 0 |
Great Falls |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-964
| 1 |
Great Falls |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-964
| 2 |
Great Falls |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-10-30 |
|
| 406-964
| 3 |
Great Falls |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-10-30 |
|
| 406-964
| 4 |
Great Falls |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-10-05 |
|
| 406-964
| 5 |
Great Falls |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-10-05 |
|
| 406-964
| 6 |
Great Falls |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-10-05 |
|
| 406-964
| 7 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2024-11-10 |
|
| 406-964
| 8 |
Great Falls |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-964
| 9 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2023-12-23 |
|
| 406-965
| A |
Great Falls |
MT |
GRFLMTMADS3 |
588H AIRUS, INC. - MT |
648 |
|
|
|
| 406-965
| 1 |
Great Falls |
MT |
|
588H AIRUS, INC. - MT |
648 |
|
2023-11-26 |
|
| 406-965
| 2 |
Great Falls |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-965
| 3 |
Great Falls |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-966
| A |
Shelby |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-966
| 0 |
Shelby |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-966
| 1 |
Shelby |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-966
| 2 |
Shelby |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-966
| 3 |
Shelby |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2014-03-14 |
|
| 406-966
| 4 |
Shelby |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-966
| 5 |
Shelby |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-966
| 6 |
Shelby |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-966
| 7 |
Shelby |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-967
| A |
Worden |
MT |
WRDNMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 0 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 1 |
Worden |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2025-05-06 |
|
<< 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
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