Local Calling Guide
Area code/prefix search
Swan Lake, MT
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-612
| A |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-612
| 1 |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-612
| 2 |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-612
| 3 |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-612
| 4 |
|
453F ONVOY, LLC - MT |
648 |
|
2017-11-20 |
|
| 406-612
| 5 |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-08 |
|
| 406-612
| 6 |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-612
| 7 |
|
453F ONVOY, LLC - MT |
648 |
|
2007-12-06 |
|
| 406-612
| 8 |
|
453F ONVOY, LLC - MT |
648 |
|
2011-03-05 |
|
| 406-612
| 9 |
|
073H TELNYX LLC |
648 |
|
2020-08-13 |
|
| 406-886
| A |
SWLKMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 0 |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-08 |
|
| 406-886
| 2 |
|
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 3 |
|
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-886
| 4 |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2016-06-08 |
|
| 406-886
| 6 |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-886
| 7 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-886
| 8 |
|
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-886
| 9 |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-11 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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