| Business | Phone |
| Telecommunication Services 300 W 15th St, Austin 78701 | (512) 463-3449 |
| Public Utility Of Texas Libr 1701 Congress Ave 12, Austin 78701 | (512) 936-7000 |
| Office Of Public Utility Cnsl 1701 Congress Ave 9-18, Austin 78701 | (512) 936-7500 |
| Oil & Gas Div 1701 Congress Ave, Austin 78701 | (512) 463-6810 |
| Information Resources Dept 300 W 15th St 1300, Austin 78701 | (512) 475-4700 |
| Information Service Div 1019 Brazos St, Austin 78701 | (512) 463-5609 |
| Emergency Communications 333 Guadalupe St 2-21, Austin 78701 | (512) 305-6911 |
| Energy Dept 111 E 17th St 1114, Austin 78711 | (512) 463-1931 |