| Business | Phone |
| 2 Way Wireless 8 Hackmatac St, Central Islip 11722 | (631) 342-0044 |
| B & A Communications 146 Wheeler Rd # A, Central Islip 11722 | (631) 851-9262 |
| National Cellular Comm Corp 110 Carleton Ave, Central Islip 11722 | (631) 582-1242 |
| Perrier Wireless 120 W Suffolk Ave, Central Islip 11722 | (631) 342-8090 |
| Isl 2000 38 E Suffolk Ave # 6, Central Islip 11722 | (631) 342-8987 |