| Business | Phone |
| Border Links 9543 Heinrich Hertz Dr # 1, San Diego 92154 | (619) 710-0665 |
| Butler Telecom Inc 650 Robinson Ave, San Diego 92103 | (619) 295-6611 |
| Express Communications 10346 Roselle St # C, San Diego 92121 | (858) 452-9150 |
| Master Systems San Diego 92108 | (619) 640-3959 |
| Csic Corp 9333 Trade Pl, San Diego 92126 | (858) 831-0881 |
| New Level San Diego 92126 | (858) 549-4153 |