The ads.txt project was put together to increase transparency in programmatic advertising. The file is hosted by the publisher and contains references to each ad network the publisher is working with. At Freestar, we work with many different ad networks and publishers, so we have built a universal file that will work for all of our publishers. For more information on the ads.txt project, please visit the IAB site for further information.
Freestar is constantly adding new partners to our network and making updates to our ads.txt file whenever a new partner is on-boarded. To make sure our publisher partners have the most current information, we have an automatic process that checks each sites ads.txt file and compares it to our master each week. If there are any differences between your current file and our master, publishers will receive an automated email informing them there is an update needed in order to be up-to-date.