Phone numbers in Glenwood Springs, Colorado
Glenwood Springs has 21 phone prefixes in area code 970.
Biggest holders: T-Mobile (including Sprint), Verizon Wireless, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 71%
- Local phone company 19%
- Internet / business phone carrier 10%
Every prefix in Glenwood Springs
Search the first six digits of a number in this list. If it's here, the number started in Glenwood Springs with the carrier shown. If it isn't, check the Colorado page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 970-230 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-274 | AT&T Mobility | Mobile carrier | – |
| 970-309 | Verizon Wireless | Mobile carrier | – |
| 970-319 | Verizon Wireless | Mobile carrier | – |
| 970-355 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 970-366 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 970-379 | Verizon Wireless | Mobile carrier | – |
| 970-384 | CenturyLink / Lumen | Local phone company | – |
| 970-404 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 970-456 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 970-505 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 970-618 | Verizon Wireless | Mobile carrier | – |
| 970-654 | AT&T Mobility | Mobile carrier | 2025 |
| 970-928 | CenturyLink / Lumen | Local phone company | – |
| 970-930 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-945 | CenturyLink / Lumen | Local phone company | – |
| 970-947 | CenturyLink / Lumen | Local phone company | – |
| 970-948 | AT&T Mobility | Mobile carrier | – |
| 970-973 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 970-987 | Verizon Wireless | Mobile carrier | – |
| 970-989 | T-Mobile (including Sprint) | Mobile carrier | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.