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.

blocksfit.vercel.app app-ads.txt check

blocksfit.vercel.app achieves the best ad optimization: its app-ads.txt has no errors and matches what its 2 ad networks expect (100% of 162 lines).

Checked 20 Oct 2026. 170 lines, 163 unique records, 0 duplicates, 0 invalid lines, 20 ad networks detected.

Ad networks in blocksfit.vercel.app/app-ads.txt

Google AdMob — account pub-5397047296907599: 1 line in the file
Unity Ads — account 151360580: 161 lines in the file
Mintegral — partner (reseller) lines only: 32 lines in the file, 400 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 60 lines in the file, 65 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 26 lines in the file, 364 expected lines missing
Chartboost — partner (reseller) lines only: 24 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 22 lines in the file, 249 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 43 lines in the file, 400 expected lines missing
Yandex Ads — partner (reseller) lines only: 14 lines in the file, 154 expected lines missing
BIGO Ads — partner (reseller) lines only: 53 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 79 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 28 lines in the file, 400 expected lines missing
Prado — partner (reseller) lines only: 7 lines in the file, 20 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 45 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 12 lines in the file, 357 expected lines missing
Start.io — partner (reseller) lines only: 16 lines in the file, 141 expected lines missing
Kidoz — partner (reseller) lines only: 8 lines in the file, 14 expected lines missing
CAS.ai — partner (reseller) lines only: 13 lines in the file, 152 expected lines missing
DSail — partner (reseller) lines only: 13 lines in the file, 152 expected lines missing
Bidmachine — partner (reseller) lines only: 72 lines in the file, 400 expected lines missing

Corrected file: blocksfit.vercel.app app-ads.txt (fixed).

FAQ

Does blocksfit.vercel.app have an app-ads.txt?

Yes — https://blocksfit.vercel.app/app-ads.txt has 170 lines (checked 20 Oct 2026).

Which ad networks does blocksfit.vercel.app work with?

Its app-ads.txt lists Google AdMob, Unity Ads, Mintegral, ironSource / LevelPlay, Liftoff Monetize (Vungle), Chartboost, InMobi, DT Exchange (Fyber), Yandex Ads, BIGO Ads, Yango Ads, Maticoo (zMaticoo) and 8 more.

Is the app-ads.txt of blocksfit.vercel.app correct?