STERLING prefixes in area code 970
NANPA records 13 assigned NXX blocks to rate center STERLING in area code 970, 1.7% of the 786 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. 6 holders hold those blocks, the largest being QWEST CORPORATION (4), LEVEL 3 COMMUNICATIONS, LLC - CO (3), N.E. COLORADO CELLULAR, INC. (2). The earliest assignment on record here is 2001-05-11 and the most recent 2026-10-16. 8 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 234, 330, 402, 580 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 970-425 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CO | 2002-04-08 | yes | yes |
| 970-458 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CO | 2002-05-02 | yes | yes |
| 970-466 | N.E. COLORADO CELLULAR, INC. | 2001-05-11 | no | yes |
| 970-520 | N.E. COLORADO CELLULAR, INC. | – | no | yes |
| 970-521 | Lumen QWEST CORPORATION | – | no | yes |
| 970-522 | Lumen QWEST CORPORATION | – | no | yes |
| 970-526 | Lumen QWEST CORPORATION | – | yes | yes |
| 970-571 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | – | yes | yes |
| 970-580 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | – | no | yes |
| 970-606 | COMMIO, LLC | 2023-08-16 | yes | yes |
| 970-740 | Lumen QWEST CORPORATION | 2020-04-15 | yes | yes |
| 970-762 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CO | 2002-06-17 | yes | yes |
| 970-983 | Onvoy ONVOY, LLC - CO | 2026-10-16 | yes | no |
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 |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 4 | 30.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CO | Lumen | 3 | 23.1% |
| N.E. COLORADO CELLULAR, INC. | – | 2 | 15.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | Verizon | 2 | 15.4% |
| COMMIO, LLC | – | 1 | 7.7% |
| ONVOY, LLC - CO | Onvoy | 1 | 7.7% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to STERLING in area code 970?
13 blocks: 425, 458, 466, 520, 521, 522, 526, 571, 580, 606, 740, 762 and 1 more, all listed in the table above.
Which carriers have numbers in STERLING?
QWEST CORPORATION (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - CO (3 blocks), N.E. COLORADO CELLULAR, INC. (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO (2 blocks), COMMIO, LLC (1 block), ONVOY, LLC - CO (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is STERLING 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.