An estimated 400m people will tune in to watch Barcelona take on Real Madrid at the Nou Camp this evening.
It is believed that 780 media professionals working across 133 different media platforms have been given permission to screen the encounter between Spain's biggest clubs.
The majority of the media attending the match will be from European countries, although there will be representatives from the USA, Qatar, Japan and Malaysia.
Hosting Barca head into El Clasico trailing Los Blancos at the top of the La Liga table by four points.
