Ads.txt Adoption Statistics

Who's using ads.txt?

735.2K
Publishers with ads.txt
1.99K
Authorized Ad Exchanges
48.8M
Total Records
25.7%
% 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 11 hours ago
Top Sites Count Percent with ads.txt
100 28 28.0%
500 134 26.8%
1,000 259 25.9%
5,000 1,284 25.7%
10,000 2,343 23.4%
50,000 7,678 15.4%
100,000 12,217 12.2%
500,000 40,923 8.2%
1,000,000 65,539 6.6%
† Based on Majestic Million sites
Top Ad Exchange See all ad exchanges »
#Ad ExchangePublishersMarket Coverage
1 google.com 721,566 98.14%
2 appnexus.com 300,415 40.86%
3 rubiconproject.com 294,345 40.03%
4 pubmatic.com 289,848 39.42%
5 openx.com 285,055 38.77%
6 indexexchange.com 279,418 38%
7 contextweb.com 272,317 37.04%
8 advertising.com 265,580 36.12%
9 adtech.com 258,564 35.17%
10 freewheel.tv 256,151 34.84%
Number of Authorized Ad Exchanges in the last 30 Days
Top 20 Ad Exchange By Market Share
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