| Business | Phone |
| Cingular Wireless 641 Camino De Los Mares # C110, San Clemente 92673 | (949) 661-0022 |
| Cingular Wireless 979 Avenida Pico # J, San Clemente 92673 | (949) 940-1750 |
| Vangurard Wireless Llc 1030 Calle Sombra, San Clemente 92673 | (949) 366-2035 |
| Verizon Wireless 638 Camino De Los Mares # 140h, San Clemente 92673 | (949) 488-9990 |
| Nortel Networks 2010 Via Solona, San Clemente 92673 | (949) 492-1879 |