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 |
| 406-614
| 9 |
Bigfork |
MT |
GRFLMTMAKMD |
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-11-14 |
|
| 406-615
| A |
Thompson Falls |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
|
|
| 406-615
| 2 |
Thompson Falls |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2013-07-20 |
|
| 406-616
| A |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-616
| 0 |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-616
| 1 |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-616
| 2 |
Three Forks |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2014-03-31 |
|
| 406-616
| 3 |
Three Forks |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-06-05 |
|
| 406-616
| 4 |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-616
| 5 |
Three Forks |
MT |
BLNGMTWEBMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2020-08-24 |
|
| 406-616
| 6 |
Three Forks |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-02-17 |
|
| 406-616
| 7 |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2011-08-22 |
|
| 406-616
| 8 |
Three Forks |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-616
| 9 |
Three Forks |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
| 406-617
| A |
Billings |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-16 |
|
| 406-617
| 0 |
Billings |
MT |
|
732J NUSO, LLC |
650 |
|
2025-02-17 |
|
| 406-617
| 1 |
Billings |
MT |
|
732J NUSO, LLC |
650 |
|
2025-02-17 |
|
| 406-617
| 2 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2025-04-05 |
|
| 406-617
| 3 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2025-08-07 |
|
| 406-617
| 4 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2025-07-08 |
|
| 406-617
| 5 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2025-07-08 |
|
| 406-617
| 6 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2025-06-14 |
|
| 406-617
| 7 |
Billings |
MT |
|
073H TELNYX LLC |
650 |
|
2025-02-17 |
|
| 406-617
| 8 |
Billings |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-16 |
|
| 406-617
| 9 |
Billings |
MT |
|
6529 T-MOBILE USA, INC. |
650 |
|
2026-03-02 |
|
| 406-618
| A |
Missoula |
MT |
|
520K TDS METROCOM, LLC |
648 |
|
2025-12-05 |
|
| 406-618
| 0 |
Missoula |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2026-01-03 |
|
| 406-618
| 2 |
Missoula |
MT |
|
520K TDS METROCOM, LLC |
648 |
|
2025-12-05 |
|
| 406-620
| A |
Billings |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-621
| A |
Fort Benton |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-621
| 0 |
Fort Benton |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2015-03-19 |
|
| 406-621
| 1 |
Fort Benton |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2023-09-09 |
|
| 406-621
| 5 |
Fort Benton |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-11 |
|
| 406-622
| A |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 0 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 2 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 3 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 4 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 5 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 6 |
Fort Benton |
MT |
FTBNMTXCDS0 |
3310 TRIANGLE TEL. COOP. ASSN., INC. |
648 |
|
|
|
| 406-622
| 8 |
Fort Benton |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2024-03-29 |
|
| 406-622
| 9 |
Fort Benton |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2017-10-08 |
|
| 406-623
| A |
Hardin |
MT |
BLNGMTVR0MD |
939H COMMIO, LLC |
650 |
|
|
|
| 406-623
| 0 |
Hardin |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2007-03-18 |
|
| 406-623
| 1 |
Hardin |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-06-05 |
|
| 406-623
| 2 |
Hardin |
MT |
BLNGMTMATMD |
935G TRI TEL, INC. - MT |
650 |
|
2013-01-28 |
|
| 406-623
| 3 |
Hardin |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-623
| 4 |
Hardin |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2005-04-09 |
|
| 406-623
| 5 |
Hardin |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2006-10-20 |
|
| 406-623
| 6 |
Hardin |
MT |
BLNGMTVR0MD |
939H COMMIO, LLC |
650 |
|
2023-07-15 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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