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 |
| 406-392
| 5 |
North Wolf Point |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-392
| 7 |
North Wolf Point |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-393
| A |
Somers |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-393
| 0 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-393
| 1 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-393
| 2 |
Somers |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-05-21 |
|
| 406-393
| 3 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-393
| 4 |
Somers |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2021-01-21 |
|
| 406-393
| 5 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-393
| 6 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-393
| 7 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-11-17 |
|
| 406-393
| 8 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-03-05 |
|
| 406-393
| 9 |
Somers |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-394
| A |
North Havre |
MT |
HAVRMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 0 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 1 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 2 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 3 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 4 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 5 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 6 |
North Havre |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2019-01-18 |
|
| 406-394
| 7 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 8 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-394
| 9 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-395
| A |
South Havre |
MT |
HAVRMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-395
| 1 |
South Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
2016-08-15 |
|
| 406-395
| 4 |
South Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-395
| 5 |
South Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-395
| 6 |
South Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-395
| 8 |
South Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-396
| A |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-397
| A |
Hingham |
MT |
HAVRMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-398
| A |
North Havre |
MT |
HAVRMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-398
| 1 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-398
| 5 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-398
| 9 |
North Havre |
MT |
|
2257 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-399
| A |
South Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-399
| 0 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-399
| 1 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-399
| 2 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-09-07 |
|
| 406-399
| 3 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-06-04 |
|
| 406-399
| 4 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-12-07 |
|
| 406-399
| 5 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-03-08 |
|
| 406-399
| 6 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-01-07 |
|
| 406-399
| 7 |
South Havre |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-04-04 |
|
| 406-399
| 8 |
South Havre |
MT |
|
958H TRIANGLE COMMUNICATION SYSTEM, INC. - MT- |
648 |
|
2017-07-01 |
|
| 406-399
| 9 |
South Havre |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-06 |
|
| 406-400
| A |
Havre |
MT |
HAVRMTXCDS1 |
958H TRIANGLE COMMUNICATION SYSTEM, INC. - MT- |
648 |
|
|
|
| 406-400
| 0 |
Havre |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-07-31 |
|
| 406-400
| 1 |
Havre |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-07-31 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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