| Business | Phone |
| Data Exchange Systems Llc 777 Southland Dr # 240, Hayward 94545 | (510) 887-2644 |
| Diamond Lane 2415 Radley Ct # 1, Hayward 94545 | (510) 782-6825 |
| Ez Board Inc 26102 Eden Landing Rd, Hayward 94545 | (415) 773-0400 |
| Prado Internet Access Inc 1260 A St # 110, Hayward 94541 | (510) 889-5200 |
| Viva Wireless 3521 Investment Blvd, Hayward 94545 | (510) 783-9097 |