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 |
| 406-748
| 3 |
Colstrip |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-748
| 4 |
Colstrip |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-748
| 5 |
Colstrip |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-748
| 6 |
Colstrip |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
| 406-748
| 7 |
Colstrip |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2005-02-21 |
|
| 406-748
| 8 |
Colstrip |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2019-05-03 |
|
| 406-748
| 9 |
Colstrip |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-16 |
|
| 406-749
| A |
Colstrip |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-749
| 0 |
Colstrip |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-749
| 1 |
Colstrip |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-749
| 2 |
Colstrip |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2021-09-28 |
|
| 406-749
| 3 |
Colstrip |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2023-06-24 |
|
| 406-749
| 4 |
Colstrip |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2022-05-05 |
|
| 406-749
| 5 |
Colstrip |
MT |
|
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
2023-12-12 |
|
| 406-749
| 7 |
Colstrip |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-05-08 |
|
| 406-749
| 8 |
Colstrip |
MT |
|
073H TELNYX LLC |
650 |
|
2024-09-12 |
|
| 406-749
| 9 |
Colstrip |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2024-02-12 |
|
| 406-750
| A |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-751
| A |
Kalispell |
MT |
KLSLMTXCDS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-752
| A |
Kalispell |
MT |
KLSLMTXCDS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-753
| A |
Brady |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-754
| A |
Condon |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-755
| A |
Kalispell |
MT |
KLSLMTXCDS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-756
| A |
Kalispell |
MT |
KLSLMTXCDS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-757
| A |
Decker |
MT |
DCKRMTXCRS1 |
2251 RANGE TEL COOP INC |
654 |
|
|
|
| 406-758
| A |
Kalispell |
MT |
KLSLMTXCDS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-759
| A |
Chester |
MT |
HAVRMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-759
| 2 |
Chester |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2019-11-25 |
|
| 406-759
| 5 |
Chester |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-759
| 6 |
Chester |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-759
| 8 |
Chester |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-759
| 9 |
Chester |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2020-02-24 |
|
| 406-760
| A |
Great Falls |
MT |
MSSLMTMAGMD |
197D VONAGE AMERICA LLC |
648 |
|
|
|
| 406-760
| 0 |
Great Falls |
MT |
|
197D VONAGE AMERICA LLC |
648 |
|
2018-08-11 |
|
| 406-760
| 1 |
Great Falls |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-760
| 2 |
Great Falls |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2022-11-17 |
|
| 406-760
| 4 |
Great Falls |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2024-07-25 |
|
| 406-760
| 8 |
Great Falls |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2022-02-08 |
|
| 406-761
| A |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-762
| A |
Opheim |
MT |
OPHEMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-762
| 3 |
Opheim |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-762
| 7 |
Opheim |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-763
| A |
Gallatin Gateway |
MT |
GLGTMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-763
| 0 |
Gallatin Gateway |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2004-11-13 |
|
| 406-763
| 1 |
Gallatin Gateway |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2010-02-20 |
|
| 406-763
| 2 |
Gallatin Gateway |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-02-12 |
|
| 406-763
| 3 |
Gallatin Gateway |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2020-11-19 |
|
| 406-763
| 4 |
Gallatin Gateway |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-763
| 5 |
Gallatin Gateway |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-763
| 6 |
Gallatin Gateway |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
<< 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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