| District of Indiana area codes: 317 | |
|---|---|
| Country | United States |
| State/Province | Indiana |
| Major City | Indianapolis |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 317-851 | Marion | Indianapolis, IN | Teleport Communications America |
| 317-852 | Hendricks | Brownsburg, IN | Ameritech Indiana |
| 317-853 | Hamilton | Carmel, IN | Windstream Nuvox Indiana |
| 317-855 | Marion | Oaklandon, IN | Mci Worldcom Communications |
| 317-856 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-857 | Marion | Indianapolis, IN | Global Crossing Local Services-in |
| 317-858 | Hendricks | Brownsburg, IN | Ameritech Indiana |
| 317-859 | Johnson | Greenwood, IN | Ameritech Indiana |
| 317-860 | Marion | Indianapolis, IN | Mcleodusa Telecommunications Services- In |
| 317-861 | Hancock | New Palestine, IN | Ameritech Indiana |
| 317-862 | Marion | Acton, IN | Ameritech Indiana |
| 317-863 | Hamilton | Fishers, IN | Us Xchange Of Indiana LLC DBA Choice One Comm In |
| 317-864 | Marion | Indianapolis, IN | Cellco Partnership DBA Verizon Wireless |
| 317-865 | Johnson | Greenwood, IN | Ameritech Indiana |
| 317-866 | Marion | Cumberland, IN | Hancock Communications |
| 317-867 | Hamilton | Westfield, IN | Frontier North |
| 317-869 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-870 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-871 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-872 | Marion | Indianapolis, IN | Ameritech Indiana |
There are 729 prefixes, In the code area, the major cities are Carmel, IN;Fishers, IN;Greenwood, IN;Indianapolis,. The major city is Indianapolis.