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 |
| 406-420
| 6 |
Bigfork |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-02-28 |
|
| 406-420
| 7 |
Bigfork |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-04-14 |
|
| 406-420
| 8 |
Bigfork |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2010-04-03 |
|
| 406-420
| 9 |
Bigfork |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-421
| A |
South Miles City |
MT |
MLCYMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-421
| 0 |
South Miles City |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-03-16 |
|
| 406-421
| 2 |
South Miles City |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-12-29 |
|
| 406-421
| 5 |
South Miles City |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-421
| 9 |
South Miles City |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-422
| A |
Helena |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-422
| 0 |
Helena |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-03-14 |
|
| 406-422
| 1 |
Helena |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2007-10-19 |
|
| 406-422
| 2 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2007-12-18 |
|
| 406-422
| 3 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2007-12-28 |
|
| 406-422
| 4 |
Helena |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2008-04-09 |
|
| 406-422
| 5 |
Helena |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2005-05-06 |
|
| 406-422
| 6 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-05-08 |
|
| 406-422
| 7 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-05-29 |
|
| 406-422
| 8 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-08-18 |
|
| 406-422
| 9 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-10-10 |
|
| 406-423
| A |
Hobson |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-424
| A |
Shelby |
MT |
SHLBMTALRL0 |
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 0 |
Shelby |
MT |
|
073H TELNYX LLC |
648 |
|
2020-08-13 |
|
| 406-424
| 1 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 2 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 4 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 5 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 7 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 8 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-424
| 9 |
Shelby |
MT |
|
3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-425
| A |
Red Lodge |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 0 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 1 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 2 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 3 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 4 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-425
| 5 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2020-10-17 |
|
| 406-425
| 6 |
Red Lodge |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2023-02-17 |
|
| 406-425
| 7 |
Red Lodge |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2024-03-22 |
|
| 406-425
| 8 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-01-19 |
|
| 406-425
| 9 |
Red Lodge |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2022-08-03 |
|
| 406-426
| A |
Red Lodge |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-426
| 0 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-426
| 1 |
Red Lodge |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2008-11-26 |
|
| 406-426
| 2 |
Red Lodge |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2011-08-11 |
|
| 406-426
| 3 |
Red Lodge |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-06-05 |
|
| 406-426
| 4 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2012-09-13 |
|
| 406-426
| 5 |
Red Lodge |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-426
| 6 |
Red Lodge |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-09-13 |
|
| 406-426
| 7 |
Red Lodge |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-12 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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