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.

ze20a6084.app-ads-txt.com app-ads.txt check

ze20a6084.app-ads-txt.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 20 Oct 2026. 2 lines, 1 unique records, 0 duplicates, 1 invalid lines, 0 ad networks detected.

Invalid lines

facebook.com, {fbid}, DIRECT, c3e20eee3f780d68

Corrected file: ze20a6084.app-ads-txt.com app-ads.txt (fixed).

FAQ

Does ze20a6084.app-ads-txt.com have an app-ads.txt?

Yes — https://ze20a6084.app-ads-txt.com/app-ads.txt has 2 lines (checked 20 Oct 2026).

Which ad networks does ze20a6084.app-ads-txt.com work with?

No known ad network was detected in its app-ads.txt.

Is the app-ads.txt of ze20a6084.app-ads-txt.com correct?