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.

q4b2105dd.app-ads-txt.com app-ads.txt check

q4b2105dd.app-ads-txt.com is missing out on higher CPMs: its app-ads.txt has 2 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 2,556 lines, 2,554 unique records, 0 duplicates, 2 invalid lines, 28 ad networks detected.

Ad networks in q4b2105dd.app-ads-txt.com/app-ads.txt

AppLovin — account 234fda5f7c5f0579b37feba24eb90d4a: 34 lines in the file, 2 expected lines missing
BIGO Ads — accounts 23174523, epuricdw1l: 400 lines in the file, 58 expected lines missing
Chartboost — account 6448c2b3e3ddb54bac6db2b8: 400 lines in the file, 4 expected lines missing
Meta Audience Network — accounts 1316712973601440, 1919958682058638, 923176230369279: 3 lines in the file
DT Exchange (Fyber) — account 213126: 352 lines in the file, 99 expected lines missing
Google AdMob — accounts pub-1497576750823563, pub-2807457004169091, pub-5497901348803107: 3 lines in the file
Mintegral — account 74540: 400 lines in the file, 9 expected lines missing
Smaato — account 1100057628: 1 line in the file
Unity Ads — account 2388952: 96 lines in the file, 65 expected lines missing
Vungle — account 5ebcea220410b000173eb9cb: 357 lines in the file, 3 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 68 lines in the file, 57 expected lines missing
InMobi — partner (reseller) lines only: 132 lines in the file, 139 expected lines missing
Yandex Ads — partner (reseller) lines only: 122 lines in the file, 46 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 93 lines in the file, 51 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 32 lines in the file, 17 expected lines missing
BlueSea — partner (reseller) lines only: 14 lines in the file, 23 expected lines missing
DSP Exchange — partner (reseller) lines only: 187 lines in the file, 374 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 168 lines in the file, 276 expected lines missing
Monetrix — partner (reseller) lines only: 35 lines in the file, 58 expected lines missing
Prado — partner (reseller) lines only: 14 lines in the file, 13 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 167 lines in the file, 202 expected lines missing
Start.io — partner (reseller) lines only: 100 lines in the file, 57 expected lines missing
Kidoz — partner (reseller) lines only: 11 lines in the file, 11 expected lines missing
CAS.ai — partner (reseller) lines only: 115 lines in the file, 50 expected lines missing
DSail — partner (reseller) lines only: 115 lines in the file, 50 expected lines missing
Bidmachine — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing

Invalid lines

mintegral.com, your PublisherID, DIRECT, 0aeed750c80d6423
singularads, 548745, RESELLER

Corrected file: q4b2105dd.app-ads-txt.com app-ads.txt (fixed).

FAQ

Does q4b2105dd.app-ads-txt.com have an app-ads.txt?

Yes — https://q4b2105dd.app-ads-txt.com/app-ads.txt has 2,556 lines (checked 20 Oct 2026).

Which ad networks does q4b2105dd.app-ads-txt.com work with?

Its app-ads.txt lists AppLovin, BIGO Ads, Chartboost, Meta Audience Network, DT Exchange (Fyber), Google AdMob, Mintegral, Smaato, Unity Ads, Vungle, ironSource / LevelPlay, InMobi and 16 more.

Is the app-ads.txt of q4b2105dd.app-ads-txt.com correct?