Phone numbers in Buffalo, Wyoming
Buffalo has 9 phone prefixes in area code 307.
Biggest holders: Verizon Wireless, AT&T Mobility, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 22%
- Internet / business phone carrier 22%
- Phone company 22%
Every prefix in Buffalo
Search the first six digits of a number in this list. If it's here, the number started in Buffalo with the carrier shown. If it isn't, check the Wyoming page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 307-217 | AT&T Mobility | Mobile carrier | 2002 |
| 307-278 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 307-285 | Airus | Phone company | 2020 |
| 307-423 | Bandwidth | Internet / business phone carrier | 2021 |
| 307-425 | Advanced Communications Technology | Phone company | 2011 |
| 307-620 | Verizon Wireless | Mobile carrier | – |
| 307-621 | Verizon Wireless | Mobile carrier | – |
| 307-684 | CenturyLink / Lumen | Local phone company | – |
| 307-719 | 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.