| 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 |
|---|---|---|---|
| 317-968 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-970 | Marion | Indianapolis, IN | Omnipoint Communications Midwest Operations LLC |
| 317-971 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-972 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-973 | Boone | Zionsville, IN | E.com Technologies |
| 317-974 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-975 | Hamilton | Carmel, IN | Metro PCS |
| 317-977 | Marion | Indianapolis, IN | Ameritech Indiana |
| 317-978 | Centurylink Communications LLC | ||
| 317-979 | Marion | Indianapolis, IN | New Cingular Wireless PCS - IL |
| 317-980 | Marion | Indianapolis, IN | Usa Mobility Wireless |
| 317-982 | Cellco Partnership DBA Verizon Wireless | ||
| 317-984 | Hamilton | Cicero, IN | Frontier North |
| 317-985 | Marion | Indianapolis, IN | Omnipoint Communications Midwest Operations LLC |
| 317-986 | Marion | Indianapolis, IN | Metro PCS |
| 317-987 | Marion | Indianapolis, IN | New Cingular Wireless PCS - IL |
| 317-988 | Hamilton | Fishers, IN | Ameritech Indiana |
| 317-989 | Marion | Indianapolis, IN | New Cingular Wireless PCS - IL |
| 317-990 | Marion | Indianapolis, IN | Usa Mobility Wireless |
| 317-991 | Marion | Indianapolis, IN | Centurylink Communications LLC |
There are 729 prefixes, In the code area, the major cities are Carmel, IN;Fishers, IN;Greenwood, IN;Indianapolis,. The major city is Indianapolis.