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 98 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-765
| 5 |
Plentywood |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2023-08-29 |
|
| 406-765
| 6 |
Plentywood |
MT |
BLNGMTWEBMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2021-05-04 |
|
| 406-765
| 7 |
Plentywood |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-765
| 8 |
Plentywood |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-765
| 9 |
Plentywood |
MT |
PLWDMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-766
| A |
Froid |
MT |
FRODMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-767
| A |
Ridge |
MT |
HLTTWYXCRS1 |
3410 RT COMMUNICATIONS |
654 |
|
|
|
| 406-768
| A |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-768
| 2 |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-768
| 3 |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-768
| 5 |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-768
| 6 |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-768
| 7 |
Poplar |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-768
| 8 |
Poplar |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-768
| 9 |
Poplar |
MT |
PPLRMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-769
| A |
Bainville |
MT |
BNVLMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-769
| 2 |
Bainville |
MT |
BNVLMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-769
| 3 |
Bainville |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-28 |
|
| 406-769
| 7 |
Bainville |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-770
| A |
Great Falls |
MT |
GRFLMTMAUMD |
318J COMCAST IP PHONE, LLC |
648 |
|
|
|
| 406-770
| 0 |
Great Falls |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2016-11-18 |
|
| 406-770
| 1 |
Great Falls |
MT |
GRFLMTMAUMD |
318J COMCAST IP PHONE, LLC |
648 |
|
2023-06-12 |
|
| 406-770
| 2 |
Great Falls |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-11-18 |
|
| 406-770
| 3 |
Great Falls |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2008-06-09 |
|
| 406-770
| 4 |
Great Falls |
MT |
HLNAMTMAMMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2016-08-16 |
|
| 406-770
| 5 |
Great Falls |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-11-18 |
|
| 406-770
| 6 |
Great Falls |
MT |
MSSLMTMAYMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2013-03-18 |
|
| 406-770
| 7 |
Great Falls |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-11-18 |
|
| 406-770
| 8 |
Great Falls |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2022-09-11 |
|
| 406-770
| 9 |
Great Falls |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2016-06-05 |
|
| 406-771
| A |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-772
| A |
Plevna |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-772
| 2 |
Plevna |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-772
| 5 |
Plevna |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-772
| 7 |
Plevna |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
| 406-772
| 9 |
Plevna |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-773
| A |
Richey |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-773
| 3 |
Richey |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-773
| 5 |
Richey |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-773
| 7 |
Richey |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-29 |
|
| 406-773
| 9 |
Richey |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-774
| A |
Lambert |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-774
| 1 |
Lambert |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-04-30 |
|
| 406-774
| 3 |
Lambert |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-774
| 4 |
Lambert |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-774
| 7 |
Lambert |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-774
| 9 |
Lambert |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-775
| A |
Ekalaka |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-775
| 4 |
Ekalaka |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2026-05-09 |
|
| 406-775
| 5 |
Ekalaka |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
<< 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 98 >>
Last updated: Sun, 17 May 2026 03:26:51 UTC
Sponsored by: VoIP.ms
Like this site? We accept donations via PayPal.