| Business | Phone |
| Digital Communications 1731 Partridge Ave, Upland 91784 | (909) 396-8835 |
| Inland Telephone 1495 W 9th St # 312, Upland 91786 | (951) 359-2011 |
| Primewave Communications 1731 Partridge Ave, Upland 91784 | (909) 376-6089 |
| Verizon 870 N Mountain Ave, Upland 91786 | (909) 981-9453 |