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 |
| 406-740
| 9 |
Colstrip |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
| 406-741
| A |
Hot Springs |
MT |
HTSPMTXCDS0 |
2241 HOT SPRINGS TEL. CO. |
648 |
|
|
|
| 406-742
| A |
Fairview |
MT |
FRVWMTMARS2 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-742
| 0 |
Fairview |
MT |
|
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-742
| 1 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-28 |
|
| 406-742
| 2 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-742
| 3 |
Fairview |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2021-01-21 |
|
| 406-742
| 4 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-742
| 5 |
Fairview |
MT |
|
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-742
| 6 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-742
| 7 |
Fairview |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-11 |
|
| 406-742
| 8 |
Fairview |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-16 |
|
| 406-742
| 9 |
Fairview |
MT |
|
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-743
| A |
Laurel |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-743
| 0 |
Laurel |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-743
| 1 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-743
| 2 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-743
| 3 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-05-29 |
|
| 406-743
| 4 |
Laurel |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2016-04-08 |
|
| 406-743
| 5 |
Laurel |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-743
| 6 |
Laurel |
MT |
|
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-743
| 7 |
Laurel |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-11 |
|
| 406-743
| 8 |
Laurel |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2024-03-22 |
|
| 406-743
| 9 |
Laurel |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2020-12-18 |
|
| 406-744
| A |
St Ignatius |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
|
|
| 406-744
| 2 |
St Ignatius |
MT |
|
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2013-01-07 |
|
| 406-744
| 4 |
St Ignatius |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-06 |
|
| 406-745
| A |
St Ignatius |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 0 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 2 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 3 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 4 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 5 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-745
| 9 |
St Ignatius |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-746
| A |
Nashua |
MT |
NASHMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-747
| A |
Fairview |
MT |
FRVWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-747
| 0 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-747
| 1 |
Fairview |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-747
| 2 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-747
| 3 |
Fairview |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-747
| 4 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-747
| 5 |
Fairview |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-747
| 6 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-747
| 7 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2013-09-14 |
|
| 406-747
| 8 |
Fairview |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-747
| 9 |
Fairview |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-748
| A |
Colstrip |
MT |
CLSTMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-748
| 0 |
Colstrip |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2023-08-20 |
|
| 406-748
| 1 |
Colstrip |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-748
| 2 |
Colstrip |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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