| Business | Phone |
| Media Matrix 2 Huntington Quadrangle, Melville 11747 | (516) 734-2600 |
| Multimedia Associates 734 Walt Whitman Rd, Melville 11747 | (631) 630-0570 |
| Nielsen Media Research Inc 904 Court North Dr, Melville 11747 | (631) 420-0098 |
| Hmg Media Inc 535 Broadhollow Rd # B31, Melville 11747 | (631) 293-8700 |