2015 theme from WordPress.
http://wordpress.org/themes/twentyfifteen
Frameworks · WordPress Theme
Get access to data on 751,813 websites that are Twenty Fifteen Customers. We know of 138,991 live websites using Twenty Fifteen and an additional 612,822 sites that used Twenty Fifteen historically and 73,487 websites in the United States.
Get a list of 751,813 websites using Twenty Fifteen which includes location information, hosting data, contact details, 138,991 currently live websites and an additional 35,531 domains that redirect to sites in this list. 612,822 sites that used this technology previously and 73,487 websites in the United States currently using Twenty Fifteen.