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.

lastampa.it app-ads.txt check

lastampa.it achieves the best ad optimization: its app-ads.txt has no errors and matches what its 9 ad networks expect (100% of 27 lines).

Checked 21 Oct 2026. 411 lines, 383 unique records, 15 duplicates, 0 invalid lines, 21 ad networks detected.

Ad networks in lastampa.it/app-ads.txt

Google AdMob — accounts pub-8541590135395559, pub-7064882285466358, pub-7264737598998814 and 1 more: 4 lines in the file
Magnite (Rubicon) — accounts 10653, 18516, 208330 and 3 more: 6 lines in the file
Index Exchange — accounts 189118, 214133, 209019: 3 lines in the file
PubMatic — accounts 158788, 167278, 164111 and 2 more: 5 lines in the file
Xandr (Microsoft) — accounts 12666, 12347, 2928 and 1 more: 4 lines in the file
Amazon Publisher Services — account 5094: 1 line in the file
Criteo — accounts B-058463, B-060207: 2 lines in the file
Sovrn — accounts 268159, 268159-eb, 397546 and 1 more: 4 lines in the file
Yahoo — account 58578: 1 line in the file
Mintegral — partner (reseller) lines only: 37 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: 14 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 13 lines in the file, 400 expected lines missing
BIGO Ads — partner (reseller) lines only: 25 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 66 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 42 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 26 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 21 lines in the file, 400 expected lines missing
Ogury — partner (reseller) lines only: 7 lines in the file, 10 expected lines missing
Start.io — partner (reseller) lines only: 12 lines in the file, 145 expected lines missing
Bidmachine — partner (reseller) lines only: 60 lines in the file, 400 expected lines missing

Corrected file: lastampa.it app-ads.txt (fixed).

FAQ

Does lastampa.it have an app-ads.txt?

Yes — https://lastampa.it/app-ads.txt has 411 lines (checked 21 Oct 2026).

Which ad networks does lastampa.it work with?

Its app-ads.txt lists Google AdMob, Magnite (Rubicon), Index Exchange, PubMatic, Xandr (Microsoft), Amazon Publisher Services, Criteo, Sovrn, Yahoo, Mintegral, Liftoff Monetize (Vungle), Chartboost and 9 more.

Is the app-ads.txt of lastampa.it correct?