| Business | Phone |
| Corazzini Brothers Inc Route 25, Greenport 11944 | (631) 477-3035 |
| Frisky Oyster 27 Front St, Greenport 11944 | (631) 477-4265 |
| Parapsychology Foundation 308 Front St, Greenport 11944 | (631) 477-2560 |
| Greenport Business Improvement 2530 Manhasset Ave, Greenport 11944 | (631) 477-8416 |
| Harbor Knoll Bed & Breakfast 424 4th St, Greenport 11944 | (631) 477-4911 |
| Rjc 855 Old Main Rd, Greenport 11944 | (718) 460-1701 |
| Tricom Inc 19 Sterlington Commons, Greenport 11944 | (631) 477-8359 |