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 |
| 406-780
| 6 |
Columbus |
MT |
BLNGMTWE8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-10 |
|
| 406-780
| 7 |
Columbus |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2011-10-21 |
|
| 406-780
| 8 |
Columbus |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-780
| 9 |
Columbus |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-781
| A |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-782
| A |
Butte |
MT |
BUTTMT09DS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-783
| A |
Scobey Rural |
MT |
WSCBMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-783
| 2 |
Scobey Rural |
MT |
WSCBMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-783
| 5 |
Scobey Rural |
MT |
WSCBMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-783
| 7 |
Scobey Rural |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-783
| 8 |
Scobey Rural |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-783
| 9 |
Scobey Rural |
MT |
WSCBMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-784
| A |
Ashland |
MT |
ASLDMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-784
| 2 |
Ashland |
MT |
ASLDMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-784
| 4 |
Ashland |
MT |
ASLDMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-784
| 6 |
Ashland |
MT |
ASLDMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-784
| 9 |
Ashland |
MT |
ASLDMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-785
| A |
North Nashua |
MT |
NNSHMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-785
| 2 |
North Nashua |
MT |
NNSHMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-785
| 4 |
North Nashua |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-29 |
|
| 406-785
| 7 |
North Nashua |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-786
| A |
Brockton |
MT |
BRTNMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-786
| 3 |
Brockton |
MT |
BRTNMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-786
| 7 |
Brockton |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-787
| A |
Culbertson |
MT |
CLSNMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-787
| 5 |
Culbertson |
MT |
CLSNMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-787
| 6 |
Culbertson |
MT |
CLSNMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-787
| 7 |
Culbertson |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-787
| 8 |
Culbertson |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
| 406-788
| A |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-789
| A |
Medicine Lake |
MT |
MDLKMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-789
| 2 |
Medicine Lake |
MT |
MDLKMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-789
| 7 |
Medicine Lake |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-790
| A |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-790
| 0 |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-790
| 1 |
Culbertson |
MT |
BLNGMT939MD |
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-790
| 4 |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2023-07-31 |
|
| 406-790
| 5 |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2022-12-21 |
|
| 406-790
| 9 |
Culbertson |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2020-07-26 |
|
| 406-791
| A |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-792
| A |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-792
| 0 |
Butte |
MT |
MSSLMTMAYMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2019-05-27 |
|
| 406-792
| 1 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-792
| 2 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-06-20 |
|
| 406-792
| 3 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-10-05 |
|
| 406-792
| 4 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-10-05 |
|
| 406-792
| 5 |
Butte |
MT |
HLNAMTMAWMD |
6529 T-MOBILE USA, INC. |
648 |
|
2017-05-25 |
|
| 406-792
| 6 |
Butte |
MT |
HLNAMTMAWMD |
6529 T-MOBILE USA, INC. |
648 |
|
2017-05-25 |
|
| 406-792
| 7 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2014-04-14 |
|
| 406-792
| 8 |
Butte |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2014-04-14 |
|
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Last updated: Thu, 16 Jul 2026 02:21:55 UTC
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