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 |
| 406-508
| 7 |
Frenchtown |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-508
| 8 |
Frenchtown |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-508
| 9 |
Frenchtown |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-510
| A |
Missoula |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-510
| 0 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 1 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 2 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 3 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 4 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 5 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 6 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 7 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 8 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-510
| 9 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-04-21 |
|
| 406-512
| A |
Boulder |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-512
| 0 |
Boulder |
MT |
|
073H TELNYX LLC |
648 |
|
2023-07-16 |
|
| 406-512
| 1 |
Boulder |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2023-04-25 |
|
| 406-512
| 2 |
Boulder |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2023-04-26 |
|
| 406-512
| 8 |
Boulder |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2023-08-20 |
|
| 406-513
| A |
Helena |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-513
| 1 |
Helena |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2008-05-30 |
|
| 406-513
| 8 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2024-09-11 |
|
| 406-513
| 9 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2024-09-11 |
|
| 406-514
| A |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-514
| 0 |
Culbertson |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2010-12-17 |
|
| 406-514
| 1 |
Culbertson |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-03 |
|
| 406-515
| A |
Superior |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-515
| 0 |
Superior |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-515
| 5 |
Superior |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-515
| 9 |
Superior |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2021-05-24 |
|
| 406-516
| A |
Laurel |
MT |
BLNGMT93EMD |
490J DISH WIRELESS, LLC |
650 |
|
|
|
| 406-516
| 0 |
Laurel |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-12-13 |
|
| 406-516
| 1 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2024-04-14 |
|
| 406-516
| 2 |
Laurel |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-07-24 |
|
| 406-516
| 8 |
Laurel |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-12-18 |
|
| 406-516
| 9 |
Laurel |
MT |
|
490J DISH WIRELESS, LLC |
650 |
|
2023-06-29 |
|
| 406-517
| A |
Livingston |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-07-22 |
|
| 406-517
| 0 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-07-22 |
|
| 406-517
| 1 |
Livingston |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2024-09-23 |
|
| 406-517
| 2 |
Livingston |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-16 |
|
| 406-517
| 3 |
Livingston |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-10 |
|
| 406-517
| 6 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-12-28 |
|
| 406-517
| 7 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-12-28 |
|
| 406-517
| 8 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-11-23 |
|
| 406-517
| 9 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-02-12 |
|
| 406-518
| A |
Gallatin Gateway |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-518
| 0 |
Gallatin Gateway |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-518
| 1 |
Gallatin Gateway |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-05-31 |
|
| 406-518
| 2 |
Gallatin Gateway |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
| 406-518
| 3 |
Gallatin Gateway |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
<< 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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