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.

wuolah.com app-ads.txt check

wuolah.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 9 ad networks expect (100% of 22 lines).

Checked 20 Oct 2026. 253 lines, 230 unique records, 6 duplicates, 0 invalid lines, 13 ad networks detected.

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

Google AdMob — accounts pub-2423712291551681, pub-3341032869739797, pub-2420489985701294: 3 lines in the file
TripleLift — account 8683: 1 line in the file
Index Exchange — accounts 192051, 190906, 192450 and 2 more: 5 lines in the file
Criteo — accounts B-062041, B-060278: 2 lines in the file
Magnite (Rubicon) — accounts 22330, 13510: 2 lines in the file
Sovrn — accounts 244287, 244287-eb, 277115 and 2 more: 5 lines in the file
Yahoo — account 55248: 1 line in the file
Xandr (Microsoft) — accounts 2928, 8233, 10264: 3 lines in the file
PubMatic — accounts 81564, 156538: 2 lines in the file
Mintegral — partner (reseller) lines only: 14 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 20 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 24 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 22 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://wuolah.com/app-ads.txt has 253 lines (checked 20 Oct 2026).

Which ad networks does wuolah.com work with?

Its app-ads.txt lists Google AdMob, TripleLift, Index Exchange, Criteo, Magnite (Rubicon), Sovrn, Yahoo, Xandr (Microsoft), PubMatic, Mintegral, Yango Ads, DSP Exchange and 1 more.

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