| Business | Phone |
| Computer Guy'Z 401 Sunset Dr # C, Antioch 94509 | (925) 756-0891 |
| Computers Usa 3405 Deer Valley Rd, Antioch 94531 | (925) 755-9989 |
| B & G Enterprises 2420 Covelite Way, Antioch 94531 | (925) 777-9331 |
| Hgm 4848 Massive Peak Way, Antioch 94531 | (925) 757-8993 |
| Sbc Computers 2500 Sycamore Dr # 2544, Antioch 94509 | (925) 757-6920 |