| Business | Phone |
| American Tower Corp 10965 Hartley Rd # M, Santee 92071 | (619) 445-5007 |
| C & G Communications Inc 8400 N Magnolia Ave, Santee 92071 | (619) 448-9500 |
| Callan Telecommunications 8404 N Magnolia Ave, Santee 92071 | (619) 562-6500 |
| Mesa Communications 10336 Everell Pl, Santee 92071 | (619) 562-1451 |
| Icma Telecomm 8047 Mission Gorge Rd, Santee 92071 | (619) 631-0363 |