Ads.txt Adoption Statistics
Who's using ads.txt?
Below 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. Of course 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
Top 100 Ad Exchange
View all ad exchanges or download the data for this chart here.
Top 10 Ad Exchange
| # | Ad Exchange | Publishers | Market Coverage |
|---|---|---|---|
| 1 | google.com | 194,213 | 97.97% |
| 2 | appnexus.com | 116,640 | 58.84% |
| 3 | rubiconproject.com | 115,159 | 58.09% |
| 4 | pubmatic.com | 112,769 | 56.89% |
| 5 | openx.com | 110,414 | 55.7% |
| 6 | indexexchange.com | 107,086 | 54.02% |
| 7 | contextweb.com | 98,719 | 49.8% |
| 8 | advertising.com | 98,220 | 49.55% |
| 9 | adtech.com | 92,889 | 46.86% |
| 10 | freewheel.tv | 91,642 | 46.23% |