COLSTRIP prefixes in area code 406
NANPA records 5 assigned NXX blocks to rate center COLSTRIP in area code 406, 0.7% of the 754 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 4 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT (2), LEVEL 3 COMMUNICATIONS, LLC - MT (1), QWEST CORPORATION (1). The earliest assignment on record here is 2003-05-06 and the most recent 2003-05-06. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 406-213 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MT | 2003-05-06 | yes | yes |
| 406-720 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | – | yes | yes |
| 406-740 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | – | yes | yes |
| 406-748 | Lumen QWEST CORPORATION | – | yes | yes |
| 406-749 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | Verizon | 2 | 40% |
| LEVEL 3 COMMUNICATIONS, LLC - MT | Lumen | 1 | 20% |
| QWEST CORPORATION | Lumen | 1 | 20% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 20% |
Frequently asked
Which prefixes belong to COLSTRIP in area code 406?
5 blocks: 213, 720, 740, 748, 749. The table above gives the holder of each.
Which carriers have numbers in COLSTRIP?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - MT (1 block), QWEST CORPORATION (1 block), NEW CINGULAR WIRELESS PCS, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is COLSTRIP a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.