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 |
| 406-876
| 0 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2021-01-17 |
|
| 406-876
| 1 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-03-12 |
|
| 406-876
| 2 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-03-12 |
|
| 406-876
| 3 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-03-12 |
|
| 406-876
| 4 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-04-15 |
|
| 406-876
| 5 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2013-04-15 |
|
| 406-876
| 6 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2021-01-17 |
|
| 406-876
| 7 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2021-01-17 |
|
| 406-876
| 8 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2022-04-29 |
|
| 406-876
| 9 |
Billings |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-12-07 |
|
| 406-877
| A |
West Beach |
MT |
KEENNDXADS0 |
1632 RESERVATION TEL. COOP. |
638 |
|
|
|
| 406-878
| A |
Great Falls |
MT |
MSSLMTXC7MD |
732J NUSO, LLC |
648 |
|
|
|
| 406-878
| 2 |
Great Falls |
MT |
MSSLMTXC7MD |
732J NUSO, LLC |
648 |
|
2023-03-30 |
|
| 406-878
| 8 |
Great Falls |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-879
| A |
Havre |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-879
| 0 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-879
| 1 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-879
| 2 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-13 |
|
| 406-879
| 3 |
Havre |
MT |
HLNAMTMAMMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2010-01-28 |
|
| 406-879
| 4 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-13 |
|
| 406-879
| 5 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-13 |
|
| 406-879
| 6 |
Havre |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2010-11-06 |
|
| 406-879
| 7 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-13 |
|
| 406-879
| 8 |
Havre |
MT |
GRFLMTMAYMD |
145J TERRA NOVA TELECOM INC. |
648 |
|
2026-07-05 |
|
| 406-879
| 9 |
Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2013-03-29 |
|
| 406-880
| A |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-881
| A |
Olney |
MT |
OLNYMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-881
| 0 |
Olney |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-881
| 1 |
Olney |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2023-02-27 |
|
| 406-881
| 2 |
Olney |
MT |
OLNYMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-881
| 3 |
Olney |
MT |
GRFLMTMAYMD |
145J TERRA NOVA TELECOM INC. |
648 |
|
2026-07-05 |
|
| 406-881
| 4 |
Olney |
MT |
OLNYMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-882
| A |
Eureka Rural |
MT |
ERKRMTXCDS1 |
2242 INTERBEL TEL. COOP., INC. |
648 |
|
|
|
| 406-883
| A |
Polson |
MT |
PLSNMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-884
| A |
Polson |
MT |
PLSNMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-884
| 1 |
Polson |
MT |
MSSLMTMACMD |
5562 METROPCS, INC. |
648 |
|
2023-09-08 |
|
| 406-884
| 2 |
Polson |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2015-10-23 |
|
| 406-884
| 4 |
Polson |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-884
| 6 |
Polson |
MT |
PLSNMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-884
| 7 |
Polson |
MT |
MSSLMTMAYMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2015-06-15 |
|
| 406-884
| 8 |
Polson |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-885
| A |
Kalispell |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-886
| A |
Swan Lake |
MT |
SWLKMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 0 |
Swan Lake |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-07-08 |
|
| 406-886
| 2 |
Swan Lake |
MT |
SWLKMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 3 |
Swan Lake |
MT |
SWLKMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 4 |
Swan Lake |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2016-06-08 |
|
| 406-886
| 6 |
Swan Lake |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-886
| 7 |
Swan Lake |
MT |
HLNAMTMAUMD |
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-886
| 8 |
Swan Lake |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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