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 99 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-533
| A |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 0 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 1 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 2 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 3 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 4 |
Butte |
MT |
GRFLMTMAKMD |
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-07-18 |
|
| 406-533
| 5 |
Butte |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2007-03-22 |
|
| 406-533
| 6 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 7 |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-533
| 8 |
Butte |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2007-07-13 |
|
| 406-533
| 9 |
Butte |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-01-22 |
|
| 406-534
| A |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
|
|
| 406-534
| 0 |
Billings |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2006-09-01 |
|
| 406-534
| 1 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2006-03-26 |
|
| 406-534
| 2 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2005-04-29 |
|
| 406-534
| 3 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2005-10-22 |
|
| 406-534
| 4 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2007-09-21 |
|
| 406-534
| 5 |
Billings |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2013-12-09 |
|
| 406-534
| 6 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2010-06-27 |
|
| 406-534
| 7 |
Billings |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2013-12-09 |
|
| 406-534
| 8 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2014-03-24 |
|
| 406-534
| 9 |
Billings |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
| 406-535
| A |
Lewistown |
MT |
LWTWMTAQRS1 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
648 |
|
|
|
| 406-536
| A |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-09 |
|
| 406-536
| 0 |
Bozeman |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2025-02-23 |
|
| 406-536
| 1 |
Bozeman |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-02-25 |
|
| 406-536
| 2 |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-06-14 |
|
| 406-536
| 3 |
Bozeman |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2025-06-11 |
|
| 406-536
| 4 |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-09-19 |
|
| 406-536
| 5 |
Bozeman |
MT |
BLNGMTWEDMD |
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-02-10 |
|
| 406-536
| 6 |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-09-19 |
|
| 406-536
| 7 |
Bozeman |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2025-10-03 |
|
| 406-536
| 8 |
Bozeman |
MT |
BLNGMTWE9MD |
073H TELNYX LLC |
650 |
|
2025-09-19 |
|
| 406-536
| 9 |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-02-09 |
|
| 406-537
| A |
Melville |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-538
| A |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 1 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 2 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 3 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 4 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 5 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 6 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 7 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 8 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-538
| 9 |
Lewistown |
MT |
LWTWMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-539
| A |
Bozeman |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-540
| A |
Missoula |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-540
| 0 |
Missoula |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-11-18 |
|
| 406-540
| 1 |
Missoula |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-540
| 2 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-01-31 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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