SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
SpotX has better usage coverage in more websites categories. Including Arts & Entertainment, News & Media, Autos & Vehicles, Car Buying and 66 other categories.
Undertone Networks is leading in People & Society, Business & Industry, Religion & Spirituality, Health and 42 other categories.
SpotX is leading in most countries, including United States, Germany, Netherlands, United Kingdom and 39 other countries.
Undertone Networks is leading in Japan, Canada, China, Australia and 10 other countries.