| Business | Phone |
| Communication Services 100 N Senate Ave # N551, Indianapolis 46204 | (317) 232-4629 |
| Communications Div 100 N Senate Ave # N301, Indianapolis 46204 | (317) 233-6057 |
| Utility Regulatory Commission 302 W Washington St # E306, Indianapolis 46204 | (317) 232-2701 |
| Soil Conservation 402 W Washington St # W265, Indianapolis 46204 | (317) 233-3870 |
| Oil & Gas Div 402 W Washington St # W293, Indianapolis 46204 | (317) 232-4055 |
| Information Technology Div 100 N Senate Ave # N551, Indianapolis 46204 | (317) 232-3172 |