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.

fastvid.com app-ads.txt check

fastvid.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 2 ad networks expect (100% of 38 lines).

Checked 24 Oct 2026. 40 lines, 38 unique records, 0 duplicates, 0 invalid lines, 9 ad networks detected.

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

Google AdMob — accounts pub-4520519124329962, pub-8274784268412732: 2 lines in the file
AppLovin — account dbe1216b11cadb0e903fab3706885a14: 36 lines in the file
Mintegral — partner (reseller) lines only: 12 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 13 lines in the file, 377 expected lines missing
Chartboost — partner (reseller) lines only: 11 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 11 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 35 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 12 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://fastvid.com/app-ads.txt has 40 lines (checked 24 Oct 2026).

Which ad networks does fastvid.com work with?

Its app-ads.txt lists Google AdMob, AppLovin, Mintegral, Liftoff Monetize (Vungle), Chartboost, DT Exchange (Fyber), Yango Ads, Verve (PubNative), Bidmachine.

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