Local Calling Guide
Area code/prefix search
Belgrade, MT
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-388
| A |
BLGRMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-813
| A |
BLNGMTWEAMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
|
|
| 406-813
| 0 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-03-21 |
|
| 406-813
| 1 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-09-09 |
|
| 406-813
| 2 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-06-12 |
|
| 406-813
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2011-11-01 |
|
| 406-813
| 4 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-08-10 |
|
| 406-813
| 5 |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 6 |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 7 |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-813
| 8 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2012-03-13 |
|
| 406-813
| 9 |
|
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-919
| A |
BLNGMT939MD |
145J TERRA NOVA TELECOM INC. |
650 |
|
|
|
| 406-919
| 0 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-919
| 1 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-919
| 2 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-919
| 3 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-919
| 4 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-07-12 |
|
| 406-919
| 5 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-07-12 |
|
| 406-919
| 6 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-11-26 |
|
| 406-919
| 7 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2021-11-26 |
|
| 406-919
| 8 |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2024-11-04 |
|
| 406-919
| 9 |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2019-04-27 |
|
| 406-924
| A |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
|
|
| 406-924
| 0 |
|
453F ONVOY, LLC - MT |
650 |
|
2011-04-29 |
|
| 406-924
| 1 |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2009-03-19 |
|
| 406-924
| 2 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2006-12-08 |
|
| 406-924
| 3 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2010-02-20 |
|
| 406-924
| 4 |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2004-12-20 |
|
| 406-924
| 5 |
|
9636 QWEST CORPORATION |
650 |
|
2009-03-30 |
|
| 406-924
| 6 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2005-06-27 |
|
| 406-924
| 7 |
|
453F ONVOY, LLC - MT |
650 |
|
2006-11-06 |
|
| 406-924
| 8 |
|
746D MONTANA OPTICOM, LLC - MT |
650 |
|
2010-08-16 |
|
| 406-924
| 9 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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