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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-284
| A |
Manhattan |
MT |
MNHTMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-284
| 0 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-07-26 |
|
| 406-284
| 1 |
Manhattan |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2014-03-31 |
|
| 406-284
| 2 |
Manhattan |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2005-06-17 |
|
| 406-284
| 3 |
Manhattan |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-284
| 4 |
Manhattan |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-284
| 5 |
Manhattan |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-06-05 |
|
| 406-284
| 6 |
Manhattan |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-284
| 7 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-284
| 8 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2011-10-24 |
|
| 406-284
| 9 |
Manhattan |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| A |
Three Forks |
MT |
THFKMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 0 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 1 |
Three Forks |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
| 406-285
| 2 |
Three Forks |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2004-11-13 |
|
| 406-285
| 3 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 4 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 5 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 6 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-285
| 7 |
Three Forks |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-285
| 8 |
Three Forks |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2011-06-27 |
|
| 406-285
| 9 |
Three Forks |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-286
| A |
Reserve |
MT |
RSRVMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-286
| 5 |
Reserve |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-286
| 7 |
Reserve |
MT |
|
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-287
| A |
Whitehall |
MT |
WHTHMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-287
| 0 |
Whitehall |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2017-08-07 |
|
| 406-287
| 1 |
Whitehall |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-08 |
|
| 406-287
| 2 |
Whitehall |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-287
| 3 |
Whitehall |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-287
| 4 |
Whitehall |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2025-02-03 |
|
| 406-287
| 5 |
Whitehall |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-287
| 6 |
Whitehall |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-10-24 |
|
| 406-287
| 7 |
Whitehall |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-287
| 8 |
Whitehall |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-03-19 |
|
| 406-287
| 9 |
Whitehall |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-288
| A |
Drummond |
MT |
ALTNMTXBRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-289
| A |
Conrad |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-289
| 0 |
Conrad |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-289
| 1 |
Conrad |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2023-08-20 |
|
| 406-289
| 3 |
Conrad |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2022-12-09 |
|
| 406-289
| 4 |
Conrad |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-08 |
|
| 406-289
| 6 |
Conrad |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-11-14 |
|
| 406-289
| 8 |
Conrad |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-289
| 9 |
Conrad |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-290
| A |
Columbus |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-290
| 0 |
Columbus |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2007-12-17 |
|
| 406-290
| 1 |
Columbus |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2008-01-28 |
|
| 406-290
| 2 |
Columbus |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2008-02-04 |
|
| 406-290
| 3 |
Columbus |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-05-31 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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