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.

x2e452d5a.app-ads-txt.com app-ads.txt check

x2e452d5a.app-ads-txt.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 2 ad networks expect (100% of 2 lines).

Checked 20 Oct 2026. 38 lines, 38 unique records, 0 duplicates, 0 invalid lines, 2 ad networks detected.

Ad networks in x2e452d5a.app-ads-txt.com/app-ads.txt

Meta Audience Network — accounts 134432394205291, 169456916157860, 1733088643538332 and 2 more: 5 lines in the file
Google AdMob — accounts 1438322159862446, pub-1275180398540464, pub-1435649915406125 and 17 more: 20 lines in the file

Corrected file: x2e452d5a.app-ads-txt.com app-ads.txt (fixed).

FAQ

Does x2e452d5a.app-ads-txt.com have an app-ads.txt?

Yes — https://x2e452d5a.app-ads-txt.com/app-ads.txt has 38 lines (checked 20 Oct 2026).

Which ad networks does x2e452d5a.app-ads-txt.com work with?

Its app-ads.txt lists Meta Audience Network, Google AdMob.

Is the app-ads.txt of x2e452d5a.app-ads-txt.com correct?