Phone numbers in Adrian, Michigan
Adrian has 27 phone prefixes in area code 517.
Biggest holders: T-Mobile (including Sprint), Frontier, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 56%
- Local phone company 19%
- Internet / business phone carrier 15%
- Paging service 4%
- Phone company 7%
Every prefix in Adrian
Search the first six digits of a number in this list. If it's here, the number started in Adrian with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 517-207 | Interactive Services Network | Internet / business phone carrier | – |
| 517-215 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 517-260 | Verizon Wireless | Mobile carrier | – |
| 517-263 | Frontier | Local phone company | – |
| 517-264 | Frontier | Local phone company | – |
| 517-265 | Frontier | Local phone company | – |
| 517-266 | Frontier | Local phone company | – |
| 517-270 | AT&T Mobility | Mobile carrier | – |
| 517-280 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 517-291 | Stratus Networks | Phone company | 2021 |
| 517-312 | Frontier | Local phone company | 2015 |
| 517-366 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 517-389 | AT&T Mobility | Mobile carrier | 2026 |
| 517-403 | T-Mobile (including Sprint) | Mobile carrier | – |
| 517-417 | TC3 Telecom | Phone company | – |
| 517-438 | Verizon Wireless | Mobile carrier | – |
| 517-442 | AT&T Mobility | Mobile carrier | – |
| 517-564 | Spok | Paging service | – |
| 517-577 | Comcast | Internet / business phone carrier | – |
| 517-605 | T-Mobile (including Sprint) | Mobile carrier | – |
| 517-633 | Skyetel | Internet / business phone carrier | 2021 |
| 517-662 | Verizon Wireless | Mobile carrier | 2010 |
| 517-673 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 517-759 | Verizon Wireless | Mobile carrier | 2002 |
| 517-902 | T-Mobile (including Sprint) | Mobile carrier | – |
| 517-918 | T-Mobile (including Sprint) | Mobile carrier | – |
| 517-920 | Interactive Services Network | Internet / business phone carrier | 2006 |
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.