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.

studio71.com app-ads.txt check

studio71.com is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 21 Oct 2026. 146 lines, 135 unique records, 2 duplicates, 1 invalid lines, 10 ad networks detected.

Ad networks in studio71.com/app-ads.txt

Google AdMob — account pub-2145533709745093: 1 line in the file
TripleLift — accounts 13893, 13893-EB, 8027: 3 lines in the file
Sovrn — account 245697: 1 line in the file
PubMatic — account 160386: 1 line in the file
Smaato — accounts 1100049317, 1100004890: 2 lines in the file
Xandr (Microsoft) — account 13966: 1 line in the file
Mintegral — partner (reseller) lines only: 15 lines in the file, 400 expected lines missing
BIGO Ads — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 20 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing

Invalid lines

madhive.com, 0, DIRECT, b16d6d9e0982efe4

Corrected file: studio71.com app-ads.txt (fixed).

FAQ

Does studio71.com have an app-ads.txt?

Yes — https://studio71.com/app-ads.txt has 146 lines (checked 21 Oct 2026).

Which ad networks does studio71.com work with?

Its app-ads.txt lists Google AdMob, TripleLift, Sovrn, PubMatic, Smaato, Xandr (Microsoft), Mintegral, BIGO Ads, Yango Ads, Bidmachine.

Is the app-ads.txt of studio71.com correct?