| Business | Phone |
| Research South Inc 555 Sparkman Dr Nw # 1612, Huntsville 35816 | (256) 721-1769 |
| Technical Improvements 904 Bob Wallace Ave Sw, Huntsville 35801 | (256) 534-4488 |
| Tetra Research Corp 2610 Spicewood Trl Ne, Huntsville 35811 | (256) 539-1075 |
| Universities Space Research 6700 Odyssey Dr Nw, Huntsville 35806 | (256) 971-0240 |
| University Space Research Assn 4950 Corporate Dr Nw, Huntsville 35805 | (256) 971-0240 |
| Vesario 2411 Whitesburg Dr S, Huntsville 35801 | (256) 539-5265 |