Ads.txt Tracking

We’ve just added tracking for the IABs ads.txt specification. The IAB’s mission is to increase transparency in the programmatic advertising ecosystem by allowing websites to create a public record of who it has direct and reseller relationships with, making it harder for counterfeit inventory to be shown on websites.

We’ll be tracking the uptake of ads.txt across the entire internet as best as possible, our coverage for ads.txt will be here.



We’ll also be tracking what ad platforms have direct and reseller relationships with websites as shown on a profile like


Gary is co-founder of BuiltWith and uses a profile picture from 2006.