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.

inquirer.com app-ads.txt check

inquirer.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 10 ad networks expect (100% of 15 lines).

Checked 19 Oct 2026. 88 lines, 67 unique records, 0 duplicates, 0 invalid lines, 19 ad networks detected.

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

Amazon Publisher Services — account 5f6d53ac-e9f7-492b-8930-023a2f85bdcd: 1 line in the file
Xandr (Microsoft) — account 10188: 1 line in the file
Index Exchange — accounts 200535, 186267, 200531: 3 lines in the file
Google AdMob — account pub-8193929163713607: 1 line in the file
OpenX — accounts 539306169, 540928197: 2 lines in the file
PubMatic — account 157576: 1 line in the file
Magnite (Rubicon) — accounts 10035, 17574: 2 lines in the file
Smaato — account 1100036563: 1 line in the file
Sovrn — accounts 243337-eb, 243337: 2 lines in the file
TripleLift — account 3074: 1 line in the file
Mintegral — partner (reseller) lines only: 17 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 11 lines in the file, 379 expected lines missing
Chartboost — partner (reseller) lines only: 23 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 14 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 27 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 11 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 16 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 14 lines in the file, 355 expected lines missing
Bidmachine — partner (reseller) lines only: 19 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://inquirer.com/app-ads.txt has 88 lines (checked 19 Oct 2026).

Which ad networks does inquirer.com work with?

Its app-ads.txt lists Amazon Publisher Services, Xandr (Microsoft), Index Exchange, Google AdMob, OpenX, PubMatic, Magnite (Rubicon), Smaato, Sovrn, TripleLift, Mintegral, Liftoff Monetize (Vungle) and 7 more.

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