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 |
| 406-342
| 1 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 2 |
Hysham |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2026-06-08 |
|
| 406-342
| 4 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 5 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 6 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 7 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 8 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-342
| 9 |
Hysham |
MT |
|
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-343
| A |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 0 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 2 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 3 |
Wyola |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-29 |
|
| 406-343
| 5 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 6 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 7 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 8 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 9 |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-344
| A |
Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-344
| 0 |
Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2018-01-12 |
|
| 406-344
| 1 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-04-04 |
|
| 406-344
| 2 |
Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2018-01-20 |
|
| 406-344
| 3 |
Havre |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2016-09-11 |
|
| 406-344
| 4 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-344
| 5 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-344
| 6 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-344
| 7 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-344
| 8 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-344
| 9 |
Havre |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-06-05 |
|
| 406-345
| A |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-345
| 0 |
Glendive |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2016-12-23 |
|
| 406-345
| 1 |
Glendive |
MT |
BLNGMT93DS0 |
588H AIRUS, INC. - MT |
650 |
|
2018-03-11 |
|
| 406-345
| 2 |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-345
| 3 |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-345
| 4 |
Glendive |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2021-01-21 |
|
| 406-345
| 5 |
Glendive |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-12-04 |
|
| 406-345
| 6 |
Glendive |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-345
| 7 |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-345
| 8 |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-345
| 9 |
Glendive |
MT |
GLNDMTAJRS0 |
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
|
|
| 406-346
| A |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 0 |
Forsyth |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-07-18 |
|
| 406-346
| 1 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 2 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 3 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 4 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 5 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 6 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 7 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 8 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - MT |
650 |
|
|
|
| 406-346
| 9 |
Forsyth |
MT |
FRSYMTMA0MD |
8140 RANGE TELEPHONE COOPERATIVE, INC. - 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 98 >>
Last updated: Sun, 17 May 2026 03:26:51 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.