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 |
| 406-930
| 1 |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-930
| 2 |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-930
| 3 |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-12-29 |
|
| 406-930
| 4 |
Big Timber |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-930
| 6 |
Big Timber |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
| 406-930
| 9 |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2024-06-14 |
|
| 406-931
| A |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-931
| 0 |
Big Timber |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-931
| 1 |
Big Timber |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2019-01-11 |
|
| 406-931
| 9 |
Big Timber |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2025-11-13 |
|
| 406-932
| A |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 0 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 2 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 3 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 4 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 5 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 6 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-932
| 7 |
Big Timber |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2017-05-20 |
|
| 406-932
| 8 |
Big Timber |
MT |
BGTMMTXCDS0 |
2257 TRIANGLE TEL. COOP. ASSN., INC. |
650 |
|
|
|
| 406-933
| A |
Helena |
MT |
CLNCMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-933
| 3 |
Helena |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-06 |
|
| 406-933
| 4 |
Helena |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2026-06-05 |
|
| 406-933
| 5 |
Helena |
MT |
CLNCMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-933
| 8 |
Helena |
MT |
CLNCMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-933
| 9 |
Helena |
MT |
CLNCMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-934
| A |
Miles City |
MT |
|
743G WIDE VOICE, LLC - MT |
650 |
|
|
|
| 406-934
| 0 |
Miles City |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-934
| 1 |
Miles City |
MT |
|
743G WIDE VOICE, LLC - MT |
650 |
|
2025-07-22 |
|
| 406-934
| 8 |
Miles City |
MT |
BLNGMTWEDMD |
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-16 |
|
| 406-934
| 9 |
Miles City |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-935
| A |
Broadus |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-935
| 0 |
Broadus |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-935
| 2 |
Broadus |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-06-07 |
|
| 406-935
| 3 |
Broadus |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-935
| 5 |
Broadus |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-01-04 |
|
| 406-935
| 9 |
Broadus |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-936
| A |
Clyde Park |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
|
|
| 406-936
| 0 |
Clyde Park |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-09-14 |
|
| 406-936
| 1 |
Clyde Park |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-936
| 2 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-936
| 3 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-936
| 4 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-936
| 5 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-936
| 6 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-936
| 7 |
Clyde Park |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2024-03-15 |
|
| 406-936
| 8 |
Clyde Park |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-936
| 9 |
Clyde Park |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-02-12 |
|
| 406-937
| A |
Sunburst |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-938
| A |
Alzada |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-938
| 0 |
Alzada |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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