| Business | Phone |
| A C Nielsen Co 6800 Jericho Tpke # 100e, Syosset 11791 | (516) 682-6000 |
| A La Carte Research 6800 Jericho Tpke # 113e, Syosset 11791 | (516) 364-4004 |
| Beta Research Corp 6400 Jericho Tpke # 2, Syosset 11791 | (516) 935-3800 |
| Norman Hecht Research Inc 33 Queens St # 301, Syosset 11791 | (516) 496-8866 |
| Erdos & Morgan 6400 Jericho Tpke, Syosset 11791 | (516) 935-6959 |
| Jay L Roth & Assoc 27 1st St, Syosset 11791 | (516) 921-3311 |