| 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 |
|---|---|---|---|
| 517-227 | Branch | Coldwater, MI | Cellco Partnership DBA Verizon Wireless |
| 517-228 | Ingham | Lansing, MI | Usa Mobility Wireless |
| 517-229 | Ingham | Lansing, MI | Usa Mobility Wireless |
| 517-230 | Ingham | Lansing, MI | Cellco Partnership DBA Verizon Wireless |
| 517-231 | Eaton | Charlotte, MI | Cellco Partnership DBA Verizon Wireless |
| 517-232 | Ingham | Lansing, MI | Usa Mobility Wireless |
| 517-233 | Eaton | Eaton Rapids, MI | Brooks Fiber Communications Of Michigan |
| 517-235 | Ingham | Lansing, MI | Sbc Internet Services |
| 517-238 | Branch | Coldwater, MI | Frontier North |
| 517-240 | Jackson | Jackson, MI | Sprint Spectrum L.p. |
| 517-241 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-242 | Ingham | Lansing, MI | Cellco Partnership DBA Verizon Wireless |
| 517-243 | Ingham | Lansing, MI | Cellco Partnership DBA Verizon Wireless |
| 517-244 | Ingham | Mason, MI | Ameritech Michigan |
| 517-250 | Jackson | Jackson, MI | New Cingular Wireless PCS - IL |
| 517-251 | Ingham | Lansing, MI | American Messaging (am) |
| 517-252 | Lenawee | Addison, MI | New Cingular Wireless PCS - IL |
| 517-253 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-254 | Hillsdale | Camden, MI | Frontier Communications Of Michigan |
| 517-255 | Ingham | Lansing, MI | American Messaging (am) |
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.