Ads.txt Adoption Statistics

Who's using ads.txt?

741.9K
Publishers with ads.txt
2.03K
Authorized Ad Exchanges
52.8M
Total Records
25.3%
% of top 5k domains with ads.txt

These are summary statistics on publisher adoption of the ads.txt standard. The first graph shows how many publishers we have crawled that have valid ads.txt files with records.

Below that are statistics about the ad publishers listed on each ads.txt file across the web. You can download the complete adstxt aggregate file and crunch the data yourself.

We do not have all ads.txt files indexed yet. Please submit domains we are missing.

Publisher Domains with Valid Ads.txt in the last 30 Days
Publisher Domains with Valid Ads.txt in the last 12 months
Percentage of Top Sites with ads.txt Updated 3 hours ago
Top Sites Count Percent with ads.txt
100 27 27.0%
500 134 26.8%
1,000 259 25.9%
5,000 1,267 25.3%
10,000 2,316 23.2%
50,000 7,874 15.7%
100,000 12,487 12.5%
500,000 43,086 8.6%
1,000,000 68,100 6.8%
† Based on Majestic Million sites
Top Ad Exchange See all ad exchanges »
#Ad ExchangePublishersMarket Coverage
1 google.com 728,672 98.21%
2 appnexus.com 294,646 39.71%
3 rubiconproject.com 288,746 38.92%
4 pubmatic.com 284,984 38.41%
5 openx.com 280,845 37.85%
6 indexexchange.com 274,787 37.04%
7 contextweb.com 268,987 36.25%
8 advertising.com 261,573 35.26%
9 adtech.com 254,675 34.33%
10 freewheel.tv 252,029 33.97%
Number of Authorized Ad Exchanges in the last 30 Days
Top 20 Ad Exchange By Market Share
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