| 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 |
|---|---|---|---|
| 517-429 | Lenawee | Hudson, MI | Centurylink Communications LLC |
| 517-431 | Lenawee | Tipton, MI | Frontier North |
| 517-432 | Ingham | Lansing, MI | Ameritech Michigan |
| 517-435 | Jackson | Jackson, MI | Cellco Partnership DBA Verizon Wireless |
| 517-436 | Lenawee | Sand Creek, MI | Sand Creek Telephone Co. |
| 517-437 | Hillsdale | Hillsdale, MI | Ameritech Michigan |
| 517-438 | Lenawee | Adrian, MI | Cellco Partnership DBA Verizon Wireless |
| 517-439 | Hillsdale | Hillsdale, MI | Ameritech Michigan |
| 517-441 | Eaton | Eaton Rapids, MI | Talk America Inc. |
| 517-442 | Lenawee | Adrian, MI | New Cingular Wireless PCS - IL |
| 517-443 | Lenawee | Jasper, MI | Ogden Telephone Co. Mi |
| 517-444 | Eaton | Charlotte, MI | Brooks Fiber Communications Of Michigan |
| 517-445 | Lenawee | Clayton, MI | Communications Corp. Of Michigan |
| 517-446 | Lenawee | Deerfield, MI | Deerfield Farmers' Telephone Company |
| 517-447 | Lenawee | Deerfield, MI | Deerfield Farmers Telephone Co. |
| 517-448 | Lenawee | Hudson, MI | Frontier North |
| 517-449 | Ingham | Lansing, MI | Cellco Partnership DBA Verizon Wireless |
| 517-451 | Lenawee | Britton, MI | Frontier North |
| 517-455 | Ingham | Lansing, MI | Talk America Inc. |
| 517-456 | Lenawee | Clinton, MI | Frontier North |
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.