| Business | Phone |
| B & J Enterprise Po Box 10025, Costa Mesa 92627 | (949) 631-5500 |
| United Tel Data 1760 Monrovia Ave, Costa Mesa 92627 | (949) 548-6997 |
| Incicomer 828 W 19th St, Costa Mesa 92627 | (949) 722-4100 |
| Stellar Telecom 2231 Pacific Ave # C2, Costa Mesa 92627 | (714) 337-1414 |