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.

challenge.iqtest-app.de app-ads.txt check

challenge.iqtest-app.de is missing out on higher CPMs: its app-ads.txt has 2 invalid lines and lists only 18 of the 198 lines its 3 ad networks expect (91% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 21 Oct 2026. 132 lines, 128 unique records, 2 duplicates, 2 invalid lines, 15 ad networks detected.

Ad networks in challenge.iqtest-app.de/app-ads.txt

Google AdMob — account pub-3818187747303580: 1 line in the file
AppLovin — account 5bc4c2e7524e7ae4b2c262582bfdfe5c: 4 lines in the file, 32 expected lines missing
Unity Ads — account 1101289: 13 lines in the file, 148 expected lines missing
Mintegral — partner (reseller) lines only: 50 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 23 lines in the file, 367 expected lines missing
Chartboost — partner (reseller) lines only: 30 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 16 lines in the file, 255 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 16 lines in the file, 400 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 10 lines in the file, 134 expected lines missing
BIGO Ads — partner (reseller) lines only: 20 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 66 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: 12 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 19 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 19 lines in the file, 400 expected lines missing

Invalid lines

telaria.com, , RESELLER, 1a4e959a1b50034a
tremorhub.com, , RESELLER, 1a4e959a1b50034a

Corrected file: challenge.iqtest-app.de app-ads.txt (fixed).

FAQ

Does challenge.iqtest-app.de have an app-ads.txt?

Yes — https://challenge.iqtest-app.de/app-ads.txt has 132 lines (checked 21 Oct 2026).

Which ad networks does challenge.iqtest-app.de work with?

Its app-ads.txt lists Google AdMob, AppLovin, Unity Ads, Mintegral, Liftoff Monetize (Vungle), Chartboost, InMobi, DT Exchange (Fyber), VK Ads (myTarget), BIGO Ads, Yango Ads, DSP Exchange and 3 more.

challenge.iqtest-app.de app-ads.txt check

Ad networks in challenge.iqtest-app.de/app-ads.txt

Invalid lines

FAQ

Does challenge.iqtest-app.de have an app-ads.txt?

Which ad networks does challenge.iqtest-app.de work with?

Is the app-ads.txt of challenge.iqtest-app.de correct?

Other checked domains

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