2015 theme from WordPress.
http://wordpress.org/themes/twentyfifteen
Frameworks · WordPress Theme
Get access to data on 872,814 websites that are Twenty Fifteen Customers. We know of 148,947 live websites using Twenty Fifteen and an additional 723,867 sites that used Twenty Fifteen historically and 79,449 websites in the United States.
Get a list of 872,814 websites using Twenty Fifteen which includes location information, hosting data, contact details, 148,947 currently live websites and an additional 36,768 domains that redirect to sites in this list. 723,867 sites that used this technology previously and 79,449 websites in the United States currently using Twenty Fifteen.