Phone numbers in Johnstmlkn, Colorado
Johnstmlkn has 8 phone prefixes in area code 970.
Biggest holders: AT&T Mobility, Teleport Communications America, Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 12%
- Internet / business phone carrier 62%
Every prefix in Johnstmlkn
Search the first six digits of a number in this list. If it's here, the number started in Johnstmlkn with the carrier shown. If it isn't, check the Colorado page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 970-408 | Teleport Communications America | Internet / business phone carrier | 2014 |
| 970-578 | Windstream (PAETEC) | Internet / business phone carrier | 2010 |
| 970-587 | CenturyLink / Lumen | Local phone company | – |
| 970-602 | Comcast | Internet / business phone carrier | 2023 |
| 970-634 | AT&T Mobility | Mobile carrier | 2019 |
| 970-660 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 970-806 | Commio | Internet / business phone carrier | 2021 |
| 970-957 | AT&T Mobility | Mobile carrier | 2024 |
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.