| Business | Phone |
| Altel Communications 983 Ponderosa Ave # B, Sunnyvale 94086 | (408) 244-1800 |
| Ata Corp 755 N Mathilda Ave, Sunnyvale 94085 | (408) 736-8697 |
| Axcel Communications 1745 Banff Dr, Sunnyvale 94087 | (408) 732-1300 |
| Biax Communications Sunnyvale 94089 | (408) 734-1611 |
| Executive Phone Svc Sunnyvale 94086 | (408) 730-1110 |
| Gpnp Inc 1050 E Duane Ave, Sunnyvale 94085 | (408) 245-0388 |
| Hana Communications Inc 528 E Weddell Dr # 8, Sunnyvale 94089 | (408) 734-4825 |
| Metro Pcs 970 W El Camino Real, Sunnyvale 94087 | (408) 616-0000 |
| Level 3 Communications Inc 1380 Kifer Rd, Sunnyvale 94086 | (408) 774-5000 |
| Public Soft 1259 Oakmead Pkwy, Sunnyvale 94085 | (408) 481-1760 |
| Shoreline Teleworks 960 Stewart Dr, Sunnyvale 94085 | (408) 331-3300 |
| Strategic Solutions 1389 Sydney Dr, Sunnyvale 94087 | (408) 733-3443 |
| Vigilant Telecom 664 Town And Country, Sunnyvale 94086 | (408) 736-3698 |