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 |
| 406-812
| 2 |
Laurel |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-03-10 |
|
| 406-812
| 3 |
Laurel |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2012-02-01 |
|
| 406-812
| 4 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-812
| 5 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-812
| 6 |
Laurel |
MT |
|
321J HD CARRIER LLC |
650 |
|
2020-09-27 |
|
| 406-812
| 7 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2011-11-28 |
|
| 406-812
| 8 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-812
| 9 |
Laurel |
MT |
|
321J HD CARRIER LLC |
650 |
|
2020-11-01 |
|
| 406-813
| A |
Belgrade |
MT |
BLNGMTWEAMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
|
|
| 406-813
| 0 |
Belgrade |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-03-21 |
|
| 406-813
| 1 |
Belgrade |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-09-09 |
|
| 406-813
| 2 |
Belgrade |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-06-12 |
|
| 406-813
| 3 |
Belgrade |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2011-11-01 |
|
| 406-813
| 4 |
Belgrade |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-10 |
|
| 406-813
| 5 |
Belgrade |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 6 |
Belgrade |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 7 |
Belgrade |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 8 |
Belgrade |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2012-03-13 |
|
| 406-813
| 9 |
Belgrade |
MT |
|
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-815
| A |
Red Lodge |
MT |
BLNGMTMAX5X |
7421 AT&T - LOCAL |
650 |
|
|
|
| 406-815
| 0 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2023-08-20 |
|
| 406-815
| 1 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-07-23 |
|
| 406-815
| 4 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-815
| 5 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-815
| 6 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-815
| 7 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-815
| 8 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-815
| 9 |
Red Lodge |
MT |
|
7421 AT&T - LOCAL |
650 |
|
2022-03-08 |
|
| 406-818
| A |
Red Lodge |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-818
| 0 |
Red Lodge |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2015-04-03 |
|
| 406-818
| 1 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-03-15 |
|
| 406-818
| 4 |
Red Lodge |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2024-07-26 |
|
| 406-818
| 5 |
Red Lodge |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2022-01-16 |
|
| 406-820
| A |
Olney |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-820
| 0 |
Olney |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-820
| 1 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-820
| 2 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-820
| 3 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-820
| 4 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-02-11 |
|
| 406-820
| 5 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-02-11 |
|
| 406-820
| 6 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-820
| 7 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-12-06 |
|
| 406-820
| 8 |
Olney |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-03-05 |
|
| 406-820
| 9 |
Olney |
MT |
|
073H TELNYX LLC |
648 |
|
2020-08-13 |
|
| 406-821
| A |
Darby |
MT |
DRBYMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-821
| 0 |
Darby |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-821
| 1 |
Darby |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-821
| 2 |
Darby |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-821
| 3 |
Darby |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-821
| 4 |
Darby |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
<< 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: LES.NET
Like this site? We accept donations via PayPal.