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 |
| 406-410
| 1 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-410
| 2 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2022-12-10 |
|
| 406-410
| 3 |
Helena |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2021-06-04 |
|
| 406-410
| 4 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2023-10-29 |
|
| 406-410
| 5 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2023-12-07 |
|
| 406-410
| 6 |
Helena |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2023-01-06 |
|
| 406-410
| 7 |
Helena |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2023-01-06 |
|
| 406-410
| 8 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2023-08-24 |
|
| 406-410
| 9 |
Helena |
MT |
|
939H COMMIO, LLC |
648 |
|
2023-08-17 |
|
| 406-412
| A |
Billings |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-412
| 0 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 1 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 2 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 3 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 4 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 5 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 6 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 7 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 8 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-412
| 9 |
Billings |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-06-21 |
|
| 406-413
| A |
Billings |
MT |
BLNGMTMADS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-413
| 0 |
Billings |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-04-09 |
|
| 406-413
| 1 |
Billings |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-04-09 |
|
| 406-413
| 2 |
Billings |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2015-06-11 |
|
| 406-413
| 3 |
Billings |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2015-06-11 |
|
| 406-413
| 4 |
Billings |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2015-06-11 |
|
| 406-413
| 5 |
Billings |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2016-11-18 |
|
| 406-413
| 6 |
Billings |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2017-08-21 |
|
| 406-413
| 7 |
Billings |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-08-13 |
|
| 406-413
| 8 |
Billings |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-04-09 |
|
| 406-413
| 9 |
Billings |
MT |
|
588H AIRUS, INC. - MT |
650 |
|
2017-04-06 |
|
| 406-414
| A |
Bozeman |
MT |
BZMNMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-414
| 0 |
Bozeman |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2015-12-10 |
|
| 406-414
| 1 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2012-01-06 |
|
| 406-414
| 2 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2012-01-06 |
|
| 406-414
| 3 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2012-01-06 |
|
| 406-414
| 4 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2012-01-06 |
|
| 406-414
| 5 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2012-01-06 |
|
| 406-414
| 6 |
Bozeman |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-03-31 |
|
| 406-414
| 7 |
Bozeman |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-03-31 |
|
| 406-414
| 8 |
Bozeman |
MT |
|
9636 QWEST CORPORATION |
650 |
|
2013-02-10 |
|
| 406-414
| 9 |
Bozeman |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2016-08-19 |
|
| 406-415
| A |
Deer Lodge |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-415
| 0 |
Deer Lodge |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-415
| 1 |
Deer Lodge |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2010-06-07 |
|
| 406-415
| 2 |
Deer Lodge |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2011-01-16 |
|
| 406-415
| 3 |
Deer Lodge |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-415
| 4 |
Deer Lodge |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2015-03-15 |
|
| 406-415
| 5 |
Deer Lodge |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-11-17 |
|
| 406-415
| 6 |
Deer Lodge |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: LES.NET
Like this site? We accept donations via PayPal.