| Business | Phone |
| Cingular Wireless 177 S Brent Cir, Walnut 91789 | (626) 965-6000 |
| Cnt Telcom 19818 Colima Rd, Walnut 91789 | (909) 595-9797 |
| Link Communications 565 Brea Canyon Rd # D, Walnut 91789 | (909) 598-8418 |
| Ag Telcom 19818 Colima Rd, Walnut 91789 | (626) 333-6883 |
| Cgetc 20270 Carrey Rd, Walnut 91789 | (909) 594-1217 |
| Cws Cellular Wholesale Svc 3920 Valley Blvd # C, Walnut 91789 | (909) 598-2244 |
| Globalcom Electronic Tech Corp 20653 Lycoming St # A9, Walnut 91789 | (909) 468-9397 |
| Imagine Wireless Inc 336 S Lemon Ave, Walnut 91789 | (909) 598-4444 |
| Mobile Action Inc 20803 Valley Blvd # 102, Walnut 91789 | (909) 598-1713 |
| Power Comm 20627 Golden Springs Dr # 1h, Walnut 91789 | (909) 869-0717 |