| Business | Phone |
| Advantage Telecommunications 5700 Moon Dr, Ventura 93003 | (805) 642-2880 |
| Calcom Resources 3445 Telegraph Rd # 108, Ventura 93003 | (805) 477-0888 |
| Geotel Communication Svc Inc 1575 Spinnaker Dr, Ventura 93001 | (805) 650-6884 |
| Pinnacle Telecommunications 7115 Owl Ct, Ventura 93003 | (805) 650-6877 |
| Worldnet Communication Svc 2291 Portola Rd, Ventura 93003 | (805) 585-6320 |
| Time Warner Telecom Ventura 93001 | (805) 535-2142 |