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 |
| 406-475
| 2 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-04-06 |
|
| 406-475
| 3 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-475
| 4 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-08-06 |
|
| 406-475
| 5 |
Helena |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-09-20 |
|
| 406-475
| 6 |
Helena |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2024-09-27 |
|
| 406-475
| 7 |
Helena |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2024-09-27 |
|
| 406-475
| 9 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-476
| A |
Dutton |
MT |
DTTNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-476
| 0 |
Dutton |
MT |
|
073H TELNYX LLC |
648 |
|
2020-08-09 |
|
| 406-476
| 1 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-476
| 2 |
Dutton |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2017-10-20 |
|
| 406-476
| 3 |
Dutton |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-476
| 4 |
Dutton |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2025-02-02 |
|
| 406-476
| 5 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-10-21 |
|
| 406-476
| 6 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-08 |
|
| 406-476
| 7 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-03-19 |
|
| 406-476
| 8 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-476
| 9 |
Dutton |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-477
| A |
Lame Deer |
MT |
LMDRMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-477
| 1 |
Lame Deer |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2018-08-27 |
|
| 406-477
| 3 |
Lame Deer |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-477
| 4 |
Lame Deer |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-477
| 6 |
Lame Deer |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-477
| 7 |
Lame Deer |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-477
| 8 |
Lame Deer |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-478
| A |
Sidney |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-478
| 0 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-478
| 1 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2010-01-20 |
|
| 406-478
| 2 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-10-14 |
|
| 406-478
| 3 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-01-07 |
|
| 406-478
| 4 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-07-08 |
|
| 406-478
| 5 |
Sidney |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2011-08-11 |
|
| 406-478
| 6 |
Sidney |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2011-08-11 |
|
| 406-478
| 7 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-11-02 |
|
| 406-478
| 8 |
Sidney |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-06-05 |
|
| 406-478
| 9 |
Sidney |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2010-11-06 |
|
| 406-479
| A |
Butte |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-479
| 0 |
Butte |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2022-01-02 |
|
| 406-479
| 1 |
Butte |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2022-12-12 |
|
| 406-479
| 2 |
Butte |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2023-11-27 |
|
| 406-479
| 3 |
Butte |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-05-04 |
|
| 406-479
| 4 |
Butte |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2013-03-12 |
|
| 406-479
| 5 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-479
| 6 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-479
| 7 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-479
| 8 |
Butte |
MT |
|
939H COMMIO, LLC |
648 |
|
2023-08-17 |
|
| 406-479
| 9 |
Butte |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2022-08-08 |
|
| 406-480
| A |
Sidney |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-480
| 0 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-480
| 1 |
Sidney |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
<< 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: VoIP Much Phone Company
Like this site? We accept donations via PayPal.