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 |
| 406-967
| 2 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 3 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 4 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 5 |
Worden |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2025-04-07 |
|
| 406-967
| 6 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 7 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 8 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-967
| 9 |
Worden |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-968
| A |
Lewistown |
MT |
|
321J HD CARRIER LLC |
648 |
|
|
|
| 406-968
| 0 |
Lewistown |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-968
| 4 |
Lewistown |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-968
| 6 |
Lewistown |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2019-05-03 |
|
| 406-968
| 7 |
Lewistown |
MT |
|
321J HD CARRIER LLC |
648 |
|
2025-07-15 |
|
| 406-968
| 8 |
Lewistown |
MT |
|
321J HD CARRIER LLC |
648 |
|
2025-07-15 |
|
| 406-968
| 9 |
Lewistown |
MT |
|
321J HD CARRIER LLC |
648 |
|
2025-07-15 |
|
| 406-969
| A |
Billings |
MT |
BLNGMTASPMD |
622J SKYE TELECOM LLC DBA SKYETEL |
650 |
|
|
|
| 406-969
| 0 |
Billings |
MT |
|
622J SKYE TELECOM LLC DBA SKYETEL |
650 |
|
2021-07-16 |
|
| 406-969
| 1 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2011-03-06 |
|
| 406-969
| 2 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2011-07-21 |
|
| 406-969
| 3 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2011-10-13 |
|
| 406-969
| 4 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2012-01-26 |
|
| 406-969
| 5 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2012-01-26 |
|
| 406-969
| 6 |
Billings |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2012-05-03 |
|
| 406-969
| 7 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2024-03-23 |
|
| 406-969
| 8 |
Billings |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2020-12-01 |
|
| 406-969
| 9 |
Billings |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2020-12-01 |
|
| 406-970
| A |
Billings |
MT |
BLNGMTWE8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
|
|
| 406-970
| 0 |
Billings |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2019-04-26 |
|
| 406-970
| 1 |
Billings |
MT |
|
551G NUSO, LLC |
650 |
|
2017-10-17 |
|
| 406-970
| 2 |
Billings |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-10-22 |
|
| 406-970
| 3 |
Billings |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2020-05-13 |
|
| 406-970
| 4 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2021-08-22 |
|
| 406-970
| 5 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2021-08-22 |
|
| 406-970
| 6 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2021-08-22 |
|
| 406-970
| 7 |
Billings |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-01 |
|
| 406-970
| 8 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2021-06-11 |
|
| 406-970
| 9 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2021-06-11 |
|
| 406-971
| A |
Plevna |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-971
| 0 |
Plevna |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-971
| 5 |
Plevna |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-971
| 8 |
Plevna |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-971
| 9 |
Plevna |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-972
| A |
West Camp Crook |
MT |
BISNSDXADS0 |
1689 WEST RIVER COOPERATIVE TELEPHONE COMPANY |
640 |
|
|
|
| 406-973
| A |
Sidney |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-973
| 0 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-973
| 1 |
Sidney |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-973
| 2 |
Sidney |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2021-09-28 |
|
| 406-973
| 9 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-974
| A |
Circle |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-974
| 0 |
Circle |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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