| Business | Phone |
| Computer 101 317 N Euclid Ave, Ontario 91762 | (909) 635-6400 |
| Computer Services Training 320 W G St # 206, Ontario 91762 | (909) 984-2655 |
| Computer User 3535 Inland Empire Blvd, Ontario 91764 | (909) 941-2587 |
| El Camino Computer School 123 W E St, Ontario 91762 | (909) 984-2666 |
| J C & Assoc 423 E Francis St, Ontario 91761 | (909) 988-6616 |
| Execu Train 3200 Inland Empire Blvd # 220, Ontario 91764 | (909) 483-1670 |