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.

omroepgelderland.nl app-ads.txt check

omroepgelderland.nl is missing out on higher CPMs: its app-ads.txt has 4 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 50 lines, 46 unique records, 0 duplicates, 4 invalid lines, 2 ad networks detected.

Ad networks in omroepgelderland.nl/app-ads.txt

Mintegral — partner (reseller) lines only: 15 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 15 lines in the file, 400 expected lines missing

Invalid lines

vidazoo.com, , RESELLER, b6ada874b4d7d0b2 # Premium Video Demand
rhythmone.com, , RESELLER, a670c89d4a324e47 #instream video by outbrain
video.unrulymedia.com, , RESELLER #instream video by outbrain
smaato.com, , RESELLER, 07bcf65f187117b4 # Premium video demand from Outbrain

Corrected file: omroepgelderland.nl app-ads.txt (fixed).

FAQ

Does omroepgelderland.nl have an app-ads.txt?

Yes — https://omroepgelderland.nl/app-ads.txt has 50 lines (checked 20 Oct 2026).

Which ad networks does omroepgelderland.nl work with?

Its app-ads.txt lists Mintegral, Yango Ads.

Is the app-ads.txt of omroepgelderland.nl correct?