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.

leo.org app-ads.txt check

leo.org achieves the best ad optimization: its app-ads.txt has no errors and matches what its ad network expects (100% of 1 line).

Checked 20 Oct 2026. 62 lines, 62 unique records, 0 duplicates, 0 invalid lines, 12 ad networks detected.

Ad networks in leo.org/app-ads.txt

Google AdMob — account pub-9814154222898478: 1 line in the file
Mintegral — partner (reseller) lines only: 19 lines in the file, 400 expected lines missing
Chartboost — partner (reseller) lines only: 14 lines in the file, 400 expected lines missing
Yandex Ads — partner (reseller) lines only: 13 lines in the file, 155 expected lines missing
BIGO Ads — partner (reseller) lines only: 16 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 36 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 28 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 15 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 20 lines in the file, 400 expected lines missing
CAS.ai — partner (reseller) lines only: 14 lines in the file, 151 expected lines missing
DSail — partner (reseller) lines only: 14 lines in the file, 151 expected lines missing
Bidmachine — partner (reseller) lines only: 34 lines in the file, 400 expected lines missing

Corrected file: leo.org app-ads.txt (fixed).

FAQ

Does leo.org have an app-ads.txt?

Yes — https://leo.org/app-ads.txt has 62 lines (checked 20 Oct 2026).

Which ad networks does leo.org work with?

Its app-ads.txt lists Google AdMob, Mintegral, Chartboost, Yandex Ads, BIGO Ads, Yango Ads, DSP Exchange, Maticoo (zMaticoo), Verve (PubNative), CAS.ai, DSail, Bidmachine.

Is the app-ads.txt of leo.org correct?