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.

app-ads-txt-site.web.app app-ads.txt check

app-ads-txt-site.web.app achieves the best ad optimization: its app-ads.txt has no errors and matches what its 3 ad networks expect (100% of 553 lines).

Checked 19 Oct 2026. 532 lines, 527 unique records, 3 duplicates, 0 invalid lines, 25 ad networks detected.

Ad networks in app-ads-txt-site.web.app/app-ads.txt

Google AdMob — account pub-6537071886296428: 1 line in the file
Liftoff Monetize (Vungle) — account 6a65869e18a92b0a3b12ad8e: 391 lines in the file
Unity Ads — account 1538828: 160 lines in the file, 1 expected line missing
AppLovin — partner (reseller) lines only: 13 lines in the file, 22 expected lines missing
Mintegral — partner (reseller) lines only: 177 lines in the file, 400 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 73 lines in the file, 52 expected lines missing
Chartboost — partner (reseller) lines only: 154 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 55 lines in the file, 216 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 142 lines in the file, 308 expected lines missing
Yandex Ads — partner (reseller) lines only: 47 lines in the file, 121 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 34 lines in the file, 110 expected lines missing
BIGO Ads — partner (reseller) lines only: 136 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
BlueSea — partner (reseller) lines only: 8 lines in the file, 29 expected lines missing
DSP Exchange — partner (reseller) lines only: 56 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 57 lines in the file, 387 expected lines missing
Monetrix — partner (reseller) lines only: 12 lines in the file, 81 expected lines missing
Prado — partner (reseller) lines only: 10 lines in the file, 17 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 148 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 34 lines in the file, 335 expected lines missing
Start.io — partner (reseller) lines only: 24 lines in the file, 133 expected lines missing
Kidoz — partner (reseller) lines only: 10 lines in the file, 12 expected lines missing
CAS.ai — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
DSail — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
Bidmachine — partner (reseller) lines only: 241 lines in the file, 400 expected lines missing

Corrected file: app-ads-txt-site.web.app app-ads.txt (fixed).

FAQ

Does app-ads-txt-site.web.app have an app-ads.txt?

Yes — https://app-ads-txt-site.web.app/app-ads.txt has 532 lines (checked 19 Oct 2026).

Which ad networks does app-ads-txt-site.web.app work with?

Its app-ads.txt lists Google AdMob, Liftoff Monetize (Vungle), Unity Ads, AppLovin, Mintegral, ironSource / LevelPlay, Chartboost, InMobi, DT Exchange (Fyber), Yandex Ads, VK Ads (myTarget), BIGO Ads and 13 more.

Is the app-ads.txt of app-ads-txt-site.web.app correct?