An IAB Tech Lab standard that lets app publishers declare which ad networks are authorized to sell their inventory.

Where do I put the app-ads.txt file?

At the root of the developer website listed in your App Store / Google Play page, e.g. https://studio.com/app-ads.txt.

What is a Certification Authority ID?

An optional TAG-ID of the ad system, the 4th field of an app-ads.txt record.

starsportsofficial.com app-ads.txt check

starsportsofficial.com is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 21 Oct 2026. 22 lines, 16 unique records, 0 duplicates, 1 invalid lines, 3 ad networks detected.

Ad networks in starsportsofficial.com/app-ads.txt

Sovrn — accounts 357833, 357833-eb: 2 lines in the file
Google AdMob — accounts pub-3317977330980825, pub-8376955896280462, pub-1940792538563598: 3 lines in the file
Meta Audience Network — account 145374144219431: 1 line in the file

Invalid lines

google.com, , DIRECT, f08c47fec0942fa0

Corrected file: starsportsofficial.com app-ads.txt (fixed).

FAQ

Does starsportsofficial.com have an app-ads.txt?

Yes — https://starsportsofficial.com/app-ads.txt has 22 lines (checked 21 Oct 2026).

Which ad networks does starsportsofficial.com work with?

Its app-ads.txt lists Sovrn, Google AdMob, Meta Audience Network.

Is the app-ads.txt of starsportsofficial.com correct?