iVillage, Inc. was owned by a media conglomerate headquartered in what building?
IVillage: iVillage, Inc. was a media company owned by NBCUniversal. NBCUniversal:  Headquartered in Rockefeller Plaza's Comcast Building (formerly the GE Building) in Midtown Manhattan, New York City, the company is one of two successor companies to MCA Inc. (Music Corporation of America), the other being Vivendi through its subsidiary Universal Music Group.
Rockefeller Plaza's Comcast Building