| Business | Phone |
| Cingular Wireless 9301 Tampa Ave, Northridge 91324 | (818) 775-9911 |
| Mobile Systems Wireless 9301 Tampa Ave # K-2c, Northridge 91324 | (818) 886-6518 |
| Alert Cellular 9301 Tampa Ave, Northridge 91324 | (818) 341-6117 |
| Axess 19400 Business Center Dr, Northridge 91324 | (818) 701-0622 |
| Cimple Communication 10201 Reseda Blvd # 118, Northridge 91324 | (818) 349-3335 |
| Cingular Wireless 19500 Plummer St # D, Northridge 91324 | (818) 772-0999 |
| Us Wireless 9250 Reseda Blvd, Northridge 91324 | (818) 349-6111 |
| T-Mobile 9301 Tampa Ave, Northridge 91324 | (818) 349-2434 |
| Sprint Pcs 19420 Nordhoff St # A, Northridge 91324 | (818) 228-2300 |
| Direct Digital Group Inc 17024 Devonshire St, Northridge 91325 | (818) 832-1074 |
| Gtc Enterprises 8618 Lindley Ave, Northridge 91325 | (818) 993-8662 |
| Modern Mobile 18451 Roscoe Blvd, Northridge 91325 | (818) 727-7777 |