Local Calling Guide
Area code/prefix search
NPA: 406
[Rate centres in NPA 406]
[Dial plan for NPA 406]
NXX: 283
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-283
| A |
Libby |
MT |
LBBYMTXCDS0 |
4322 ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER |
960 |
|
|
|
| 406-283
| 0 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2020-06-05 |
|
| 406-283
| 1 |
Libby |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
960 |
|
|
|
| 406-283
| 2 |
Libby |
MT |
|
4322 ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER |
960 |
|
|
|
| 406-283
| 3 |
Libby |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
960 |
|
2017-04-01 |
|
| 406-283
| 4 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2020-02-23 |
|
| 406-283
| 5 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2021-08-28 |
|
| 406-283
| 6 |
Libby |
MT |
|
4322 ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER |
960 |
|
|
|
| 406-283
| 7 |
Libby |
MT |
|
4322 ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER |
960 |
|
|
|
| 406-283
| 8 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2022-01-02 |
|
| 406-283
| 9 |
Libby |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
960 |
|
2020-07-13 |
|
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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