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 |
| 406-550
| 8 |
Missoula |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2023-02-24 |
|
| 406-550
| 9 |
Missoula |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2023-02-24 |
|
| 406-551
| A |
Bozeman |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-551
| 0 |
Bozeman |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-05-13 |
|
| 406-551
| 1 |
Bozeman |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2006-05-27 |
|
| 406-551
| 2 |
Bozeman |
MT |
BZMNMTEF2MD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2006-12-08 |
|
| 406-551
| 3 |
Bozeman |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-06-06 |
|
| 406-551
| 4 |
Bozeman |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-551
| 5 |
Bozeman |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2011-07-20 |
|
| 406-551
| 6 |
Bozeman |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2006-01-14 |
|
| 406-551
| 7 |
Bozeman |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2014-10-24 |
|
| 406-551
| 8 |
Bozeman |
MT |
BLNGMTMATMD |
935G TRI TEL, INC. - MT |
650 |
|
2017-09-02 |
|
| 406-551
| 9 |
Bozeman |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2011-11-25 |
|
| 406-552
| A |
Missoula |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-552
| 0 |
Missoula |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2005-01-14 |
|
| 406-552
| 1 |
Missoula |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2005-01-26 |
|
| 406-552
| 2 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-01-04 |
|
| 406-552
| 3 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-02-09 |
|
| 406-552
| 4 |
Missoula |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-552
| 5 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-04-05 |
|
| 406-552
| 6 |
Missoula |
MT |
MSSLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
2006-04-25 |
|
| 406-552
| 7 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-05-03 |
|
| 406-552
| 8 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-09-23 |
|
| 406-552
| 9 |
Missoula |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-10-22 |
|
| 406-553
| A |
Divide |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-553
| 1 |
Divide |
MT |
BLNGMT939MD |
145J TERRA NOVA TELECOM INC. |
648 |
|
2026-07-05 |
|
| 406-553
| 3 |
Divide |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-554
| A |
North Broadus |
MT |
BRDSMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-556
| A |
Bozeman |
MT |
BZMNMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-557
| A |
Jordan |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-557
| 1 |
Jordan |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2026-09-11 |
|
| 406-557
| 2 |
Jordan |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-557
| 3 |
Jordan |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2026-05-09 |
|
| 406-557
| 6 |
Jordan |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-557
| 7 |
Jordan |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-557
| 9 |
Jordan |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-558
| A |
Helena |
MT |
HLNAMTMAX7X |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
|
|
| 406-558
| 0 |
Helena |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2024-10-27 |
|
| 406-558
| 2 |
Helena |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2014-10-24 |
|
| 406-558
| 3 |
Helena |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2021-10-02 |
|
| 406-558
| 4 |
Helena |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-558
| 5 |
Helena |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2024-05-05 |
|
| 406-558
| 6 |
Helena |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2024-05-05 |
|
| 406-558
| 7 |
Helena |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2024-05-05 |
|
| 406-558
| 8 |
Helena |
MT |
HLNAMTMAX7X |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2025-11-23 |
|
| 406-558
| 9 |
Helena |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2004-09-27 |
|
| 406-559
| A |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-559
| 0 |
Anaconda |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-559
| 1 |
Anaconda |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2025-05-30 |
|
| 406-559
| 2 |
Anaconda |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2011-01-16 |
|
<< 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 >>
Last updated: Sat, 10 Oct 2026 15:24:20 UTC
Sponsored by: Execulink Telecom
Like this site? We accept donations via PayPal.