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 |
| 406-674
| 5 |
Whitewater |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-674
| 6 |
Whitewater |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-674
| 7 |
Whitewater |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-674
| 8 |
Whitewater |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-674
| 9 |
Whitewater |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-675
| A |
Pablo |
MT |
PABLMTXCRS1 |
2252 RONAN TEL. CO. |
648 |
|
|
|
| 406-676
| A |
Ronan |
MT |
RONNMTXCDS0 |
2252 RONAN TEL. CO. |
648 |
|
|
|
| 406-677
| A |
Seeley Lake |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-677
| 0 |
Seeley Lake |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2024-05-17 |
|
| 406-677
| 1 |
Seeley Lake |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2024-10-15 |
|
| 406-677
| 2 |
Seeley Lake |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-677
| 3 |
Seeley Lake |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-677
| 4 |
Seeley Lake |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-11 |
|
| 406-677
| 5 |
Seeley Lake |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2026-02-06 |
|
| 406-677
| 7 |
Seeley Lake |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2025-07-23 |
|
| 406-677
| 8 |
Seeley Lake |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2025-02-13 |
|
| 406-677
| 9 |
Seeley Lake |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-678
| A |
Haugan |
MT |
HAGNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-679
| A |
Hardin |
MT |
BLNGMTVR5MD |
732J NUSO, LLC |
650 |
|
|
|
| 406-679
| 0 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 1 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 2 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 3 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 4 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-09-05 |
|
| 406-679
| 5 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 6 |
Hardin |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 7 |
Hardin |
MT |
|
732J NUSO, LLC |
650 |
|
2023-07-13 |
|
| 406-680
| A |
Malta |
MT |
MALTMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
648 |
|
|
|
| 406-680
| 0 |
Malta |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2021-04-23 |
|
| 406-680
| 2 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2023-01-06 |
|
| 406-680
| 7 |
Malta |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
648 |
|
|
|
| 406-680
| 9 |
Malta |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
648 |
|
|
|
| 406-681
| A |
Grant |
MT |
WSDMMTXCDS0 |
2254 SOUTHERN MONTANA TEL. CO. |
648 |
|
|
|
| 406-682
| A |
Ennis |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 0 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
2023-12-16 |
|
| 406-682
| 1 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 2 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 3 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 4 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 5 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 6 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 7 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 8 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-682
| 9 |
Ennis |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-683
| A |
Dillon |
MT |
DLLNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-684
| A |
Twin Bridges |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-685
| A |
Harrison |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-686
| A |
Clyde Park |
MT |
CLPKMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-686
| 0 |
Clyde Park |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2004-11-13 |
|
| 406-686
| 1 |
Clyde Park |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2010-02-20 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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