Phone numbers in Douglas, Wyoming
Douglas has 9 phone prefixes in area code 307.
Biggest holders: AT&T Mobility, Level 3 (Lumen), Stratus Networks. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 22%
- Internet / business phone carrier 22%
- Phone company 11%
Every prefix in Douglas
Search the first six digits of a number in this list. If it's here, the number started in Douglas with the carrier shown. If it isn't, check the Wyoming page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 307-298 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 307-306 | Stratus Networks | Phone company | 2020 |
| 307-351 | AT&T Mobility | Mobile carrier | – |
| 307-358 | CenturyLink / Lumen | Local phone company | – |
| 307-359 | Verizon Wireless | Mobile carrier | – |
| 307-372 | Onvoy | Internet / business phone carrier | 2020 |
| 307-428 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 307-624 | AT&T Mobility | Mobile carrier | 2001 |
| 307-717 | Union Telephone | Local phone company | 2002 |
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.