Local Calling Guide
Area code/prefix search
NPA: 406
[Rate centres in NPA 406]
[Dial plan for NPA 406]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-987
| A |
Glendive |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-987
| 0 |
Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-987
| 1 |
Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-987
| 2 |
Glendive |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-987
| 3 |
Glendive |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-987
| 4 |
Glendive |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-987
| 5 |
Glendive |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-987
| 6 |
Glendive |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-11 |
|
| 406-987
| 8 |
Glendive |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-16 |
|
| 406-987
| 9 |
Glendive |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-988
| A |
Dillon |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-988
| 0 |
Dillon |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-03-24 |
|
| 406-988
| 4 |
Dillon |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2005-03-02 |
|
| 406-988
| 6 |
Dillon |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-988
| 7 |
Dillon |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2006-10-19 |
|
| 406-988
| 8 |
Dillon |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-988
| 9 |
Dillon |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-11 |
|
| 406-989
| A |
West Glendive |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-989
| 0 |
West Glendive |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-989
| 1 |
West Glendive |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-989
| 9 |
West Glendive |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
| 406-990
| A |
Lame Deer |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-990
| 0 |
Lame Deer |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-10-06 |
|
| 406-990
| 8 |
Lame Deer |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2021-08-27 |
|
| 406-991
| A |
Marion |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-991
| 0 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-991
| 1 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-991
| 2 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-991
| 3 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-991
| 4 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-991
| 6 |
Marion |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2024-06-09 |
|
| 406-991
| 7 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-12-06 |
|
| 406-991
| 8 |
Marion |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-03-05 |
|
| 406-991
| 9 |
Marion |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-992
| A |
Helena |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-992
| 0 |
Helena |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2025-05-17 |
|
| 406-993
| A |
Big Sky |
MT |
BGSYMTXCDS0 |
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 0 |
Big Sky |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2024-07-24 |
|
| 406-993
| 1 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 2 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 3 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 4 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 5 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 6 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 7 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-993
| 8 |
Big Sky |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2019-02-14 |
|
| 406-993
| 9 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-994
| A |
Bozeman |
MT |
BZMNMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-995
| A |
Big Sky |
MT |
BGSYMTXCDS0 |
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-995
| 0 |
Big Sky |
MT |
|
2255 3 RIVERS TEL. COOP., INC. |
650 |
|
2023-12-16 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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