ASPEN prefixes in area code 970
NANPA records 17 assigned NXX blocks to rate center ASPEN in area code 970, 2.2% 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. 8 holders hold those blocks, the largest being QWEST CORPORATION (8), LEVEL 3 COMMUNICATIONS, LLC - CO (2), NEW CINGULAR WIRELESS PCS, LLC (2). The earliest assignment on record here is 2001-01-16 and the most recent 2025-12-17. 12 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 |
|---|---|---|---|---|
| 970-205 | Lumen QWEST CORPORATION | 2001-01-16 | yes | yes |
| 970-236 | ZIPPYTECH INCORPORATED | 2009-07-06 | yes | yes |
| 970-277 | SAN ISABEL TELECOM, INC. - CO | 2004-11-16 | no | yes |
| 970-300 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CO | 2001-04-24 | yes | yes |
| 970-315 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CO | – | yes | yes |
| 970-429 | Lumen QWEST CORPORATION | – | yes | yes |
| 970-452 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2016-09-15 | yes | yes |
| 970-544 | Lumen QWEST CORPORATION | – | no | yes |
| 970-710 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 970-742 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-12-18 | yes | yes |
| 970-807 | Vonage VONAGE AMERICA LLC | 2022-06-24 | yes | yes |
| 970-916 | Onvoy ONVOY, LLC - CO | 2025-12-17 | yes | yes |
| 970-920 | Lumen QWEST CORPORATION | – | no | yes |
| 970-922 | Lumen QWEST CORPORATION | – | yes | yes |
| 970-923 | Lumen QWEST CORPORATION | – | no | yes |
| 970-924 | Lumen QWEST CORPORATION | 2007-05-30 | yes | yes |
| 970-925 | Lumen QWEST CORPORATION | – | no | 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 |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 8 | 47.1% |
| LEVEL 3 COMMUNICATIONS, LLC - CO | Lumen | 2 | 11.8% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 2 | 11.8% |
| ZIPPYTECH INCORPORATED | – | 1 | 5.9% |
| SAN ISABEL TELECOM, INC. - CO | – | 1 | 5.9% |
| T-MOBILE USA, INC. | T-Mobile | 1 | 5.9% |
| VONAGE AMERICA LLC | Vonage | 1 | 5.9% |
| ONVOY, LLC - CO | Onvoy | 1 | 5.9% |
Frequently asked
Which prefixes belong to ASPEN in area code 970?
17 blocks: 205, 236, 277, 300, 315, 429, 452, 544, 710, 742, 807, 916 and 5 more, all listed in the table above.
Which carriers have numbers in ASPEN?
QWEST CORPORATION (8 blocks), LEVEL 3 COMMUNICATIONS, LLC - CO (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), ZIPPYTECH INCORPORATED (1 block), SAN ISABEL TELECOM, INC. - CO (1 block), T-MOBILE USA, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is ASPEN 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.