Phone numbers in Hanna, Wyoming
Hanna has 4 phone prefixes in area code 307.
Biggest holders: Union Tel, Union Telephone, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Phone company 50%
Every prefix in Hanna
Search the first six digits of a number in this list. If it's here, the number started in Hanna with the carrier shown. If it isn't, check the Wyoming page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 307-325 | Union Tel | Phone company | – |
| 307-339 | Union Telephone | Local phone company | – |
| 307-348 | Union Tel | Phone company | – |
| 307-397 | AT&T Mobility | Mobile carrier | 2021 |
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.