The website has disallow rules for Google Media Partners.
https://ads.google.com
Robots.txt
Get access to data on 2,756,723 websites that are Google Media Partners Disallow Customers. We know of 2,658,808 live websites using Google Media Partners Disallow and an additional 97,915 sites that used Google Media Partners Disallow historically and 1,903,046 websites in the United States.
Get a list of 2,756,723 websites using Google Media Partners Disallow which includes location information, hosting data, contact details, 2,658,808 currently live websites and an additional 107,968 domains that redirect to sites in this list. 97,915 sites that used this technology previously and 1,903,046 websites in the United States currently using Google Media Partners Disallow.