| Business | Phone |
| Carrier Communications San Marcos 92069 | (760) 744-5688 |
| E Williams & Assoc 1016 San Julian Dr, San Marcos 92078 | (760) 736-8177 |
| Soapbox Mobile San Marcos 92078 | (760) 591-0097 |
| Quantum Communications 221 Pawnee St, San Marcos 92078 | (760) 736-7045 |
| Pegasus Marketing Group 310 Via Vera Cruz, San Marcos 92078 | (760) 752-1710 |