| District of Michigan area codes: 517 | |
|---|---|
| Country | United States |
| State/Province | Michigan |
| Major City | Lansing |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 517-317 | Branch | Coldwater, MI | New Cingular Wireless PCS - IL |
| 517-318 | Eaton | Lansing, MI | Brooks Fiber Communications Of Michigan |
| 517-319 | Eaton | Lansing, MI | Brooks Fiber Communications Of Michigan |
| 517-320 | Jackson | Jackson, MI | Cellco Partnership DBA Verizon Wireless |
| 517-321 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-322 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-323 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-324 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-325 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-327 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-330 | Hillsdale | Litchfield, MI | Telnet Worldwide |
| 517-331 | Ingham | Lansing, MI | Cellco Partnership DBA Verizon Wireless |
| 517-332 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-333 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-334 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-335 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-336 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-337 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-338 | Livingston | Howell, MI | Xo Communications Services |
| 517-339 | Ingham | Haslett, MI | Ameritech Michigan |
There are 533 prefixes, In the code area, the major cities are Adrian, MI;Clinton, MI;East Lansing, MI;Jackson, M. The major city is Lansing.