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.

spiele.rtl.de app-ads.txt check

spiele.rtl.de achieves the best ad optimization: its app-ads.txt has no errors and matches what its 5 ad networks expect (100% of 9 lines).

Checked 20 Oct 2026. 310 lines, 300 unique records, 10 duplicates, 0 invalid lines, 10 ad networks detected.

Ad networks in spiele.rtl.de/app-ads.txt

Amazon Publisher Services — accounts 3493, 7071406c-0ffd-423e-87e5-da06d18c5cc9: 2 lines in the file
Google AdMob — account pub-9519890336884096: 1 line in the file
OpenX — account 539902333: 1 line in the file
Magnite (Rubicon) — accounts 21958, 23864, 23866 and 1 more: 4 lines in the file
PubMatic — account 161364: 1 line in the file
Chartboost — partner (reseller) lines only: 12 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 26 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 17 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 17 lines in the file, 400 expected lines missing

Corrected file: spiele.rtl.de app-ads.txt (fixed).

FAQ

Does spiele.rtl.de have an app-ads.txt?

Yes — https://spiele.rtl.de/app-ads.txt has 310 lines (checked 20 Oct 2026).

Which ad networks does spiele.rtl.de work with?

Its app-ads.txt lists Amazon Publisher Services, Google AdMob, OpenX, Magnite (Rubicon), PubMatic, Chartboost, Yango Ads, DSP Exchange, Maticoo (zMaticoo), Bidmachine.

Is the app-ads.txt of spiele.rtl.de correct?