Index Exchange

A global media outfit sits just south of the Financial District. Index Exchange handles buying and selling ad space, trading impressions across screens and formats with an emphasis on data and transparency. Headquartered in a downtown building where finance meets tech, the company quietly powers campaigns that land on web pages and mobile feeds alike.

Its address is straightforward: 175 Greenwich Street, New York, NY 10007. The lobby blends into the glass-and-steel rhythm of Lower Manhattan, surrounded by commuters and co-working towers. Above the street-level buzz, teams orchestrate bids, clean data, and plug partners into real-time marketplaces.

The team can be reached by calling (212) 647-7575. Calls route to specialists who field questions on demand-side platforms, header bidding wrappers, and the mechanics behind each served ad. It’s a practical line for media buyers, publishers, and partners coordinating campaigns.

Find directions on the map if it’s your first time: https://www.google.com/maps/place?ftid=0x89c259a38140b0b7:0x20c175c89c3df26e. The building’s revolving doors spin steadily; check the directory once inside.