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.

h1d2c8826.app-ads-txt.com app-ads.txt check

h1d2c8826.app-ads-txt.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 3 ad networks expect (100% of 3 lines).

Checked 19 Oct 2026. 4 lines, 4 unique records, 0 duplicates, 0 invalid lines, 3 ad networks detected.

Ad networks in h1d2c8826.app-ads-txt.com/app-ads.txt

Google AdMob — account pub-6846412231756274: 1 line in the file
OpenX — account 564016528: 1 line in the file
Magnite (Rubicon) — account 22884: 1 line in the file

Corrected file: h1d2c8826.app-ads-txt.com app-ads.txt (fixed).

FAQ

Does h1d2c8826.app-ads-txt.com have an app-ads.txt?

Yes — https://h1d2c8826.app-ads-txt.com/app-ads.txt has 4 lines (checked 19 Oct 2026).

Which ad networks does h1d2c8826.app-ads-txt.com work with?

Its app-ads.txt lists Google AdMob, OpenX, Magnite (Rubicon).

Is the app-ads.txt of h1d2c8826.app-ads-txt.com correct?