| Business | Phone |
| C D Tech 26642 Hibiscus St, Highland 92346 | (909) 633-7789 |
| Danbala Software 27730 Clifton St, Highland 92346 | (909) 864-3857 |
| New Time Advanced Program Svc 7322 Cunningham St, Highland 92346 | (909) 238-0322 |
| Quality Programming Inc 27054 Fisher St, Highland 92346 | (909) 862-2650 |