National Geographic Channels expanded its contract for Rentrak's media measurement services, adding the Digital Download Essentials reporting and auditing service for Internet video-on-demand and electronic sell-through content.
Nat Geo also subscribes to Rentrak's OnDemand Essentials and TV Essentials measurement services.
"Rentrak offers the ability to look at our audience on multiple platforms, giving us more insight into behavior in linear, on-demand and now with digital downloads," Brad Dancer, National Geographic Channels senior vice president of audience and business development, said in a statement.
Rentrak's Digital Download Essentials provides daily, census-level data for content distributed in more than 65 countries on behalf of many major studios and TV networks.
National Geographic Channels U.S. is a joint venture between the National Geographic Society and Fox Cable Networks.