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 |
| 406-559
| 3 |
Anaconda |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-559
| 4 |
Anaconda |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-559
| 5 |
Anaconda |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-06 |
|
| 406-559
| 6 |
Anaconda |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2010-11-05 |
|
| 406-559
| 7 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2016-06-18 |
|
| 406-559
| 8 |
Anaconda |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2020-08-07 |
|
| 406-559
| 9 |
Anaconda |
MT |
GRFLMTMAKMD |
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-10-30 |
|
| 406-560
| A |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 0 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 1 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 2 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 3 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 4 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 5 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 6 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 7 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 8 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-560
| 9 |
Anaconda |
MT |
GRFLMTMAYMD |
145J TERRA NOVA TELECOM INC. |
648 |
|
2026-06-05 |
|
| 406-561
| A |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
|
|
| 406-561
| 0 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2020-02-02 |
|
| 406-561
| 1 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2020-02-02 |
|
| 406-561
| 2 |
Billings |
MT |
BLNGMTMAXMD |
5562 METROPCS, INC. |
650 |
|
2018-08-04 |
|
| 406-561
| 3 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2019-04-28 |
|
| 406-561
| 4 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2019-04-28 |
|
| 406-561
| 5 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2018-11-25 |
|
| 406-561
| 6 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2018-05-10 |
|
| 406-561
| 7 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2018-05-10 |
|
| 406-561
| 8 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2018-03-22 |
|
| 406-561
| 9 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2017-11-01 |
|
| 406-562
| A |
Augusta |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-563
| A |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 0 |
Anaconda |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-04-09 |
|
| 406-563
| 2 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 3 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 4 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 5 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 6 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 7 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 8 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-563
| 9 |
Anaconda |
MT |
ANCNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-564
| A |
Great Falls |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-564
| 0 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-09-23 |
|
| 406-564
| 1 |
Great Falls |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2005-06-03 |
|
| 406-564
| 2 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-10-22 |
|
| 406-564
| 3 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-02-06 |
|
| 406-564
| 4 |
Great Falls |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-564
| 5 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-03-07 |
|
| 406-564
| 6 |
Great Falls |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2010-11-06 |
|
| 406-564
| 7 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-04-04 |
|
| 406-564
| 8 |
Great Falls |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-06-03 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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