| Business | Phone |
| Computer Service Co 5936 Villa Dr, Alta Loma 91737 | (909) 941-4516 |
| Conix 6401 Haven Ave, Alta Loma 91737 | (909) 483-5700 |
| Dollard Software 11208 Brown Dr, Alta Loma 91701 | (909) 941-8698 |
| Conix Wireless 6401 Haven Ave # 110, Alta Loma 91737 | (909) 483-5700 |