| Business | Phone |
| Completecomm Telecommunication 4119 Avenida De La Plata, Oceanside 92056 | (760) 477-7700 |
| Abra Collabra 547 Vista Bella, Oceanside 92057 | (760) 433-3000 |
| Pro Touch Wireless 3784 Mission Ave, Oceanside 92054 | (760) 529-0757 |
| Pac-West Telecomm Inc Oceanside 92054 | (760) 826-0000 |
| Nova Voice & Data Systems 2929 Oceanside Blvd, Oceanside 92054 | (760) 754-8801 |
| Nova Voice & Data Systems Inc 4886 Motif St, Oceanside 92057 | (760) 945-9000 |
| Fem-Telecom Inc 4585 Maple Dr, Oceanside 92056 | (760) 758-3742 |