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.

arbor.mobi app-ads.txt check

arbor.mobi is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 19 Oct 2026. 611 lines, 599 unique records, 5 duplicates, 1 invalid lines, 28 ad networks detected.

Ad networks in arbor.mobi/app-ads.txt

Google AdMob — accounts pub-2890559903928937, pub-1980576454975917, pub-1831984866835672: 3 lines in the file
TripleLift — accounts 10344, 10344-EB: 2 lines in the file
Smaato — account 1100047005: 1 line in the file
PubMatic — accounts 160832, 160468, 168240: 3 lines in the file
OpenX — account 545628478: 1 line in the file
Index Exchange — account 195652: 1 line in the file
Meta Audience Network — account 1351359808972388: 1 line in the file
VK Ads (myTarget) — account 2791629: 174 lines in the file, 1 expected line missing
Liftoff Monetize (Vungle) — account 561e8d956b8d90f61a002a26: 387 lines in the file, 4 expected lines missing
AppLovin — partner (reseller) lines only: 14 lines in the file, 21 expected lines missing
Mintegral — partner (reseller) lines only: 200 lines in the file, 400 expected lines missing
Unity Ads — partner (reseller) lines only: 29 lines in the file, 131 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 31 lines in the file, 94 expected lines missing
Chartboost — partner (reseller) lines only: 178 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 48 lines in the file, 223 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 129 lines in the file, 321 expected lines missing
Yandex Ads — partner (reseller) lines only: 46 lines in the file, 122 expected lines missing
BIGO Ads — partner (reseller) lines only: 125 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 78 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 41 lines in the file, 400 expected lines missing
Monetrix — partner (reseller) lines only: 19 lines in the file, 74 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 138 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 33 lines in the file, 336 expected lines missing
Start.io — partner (reseller) lines only: 16 lines in the file, 141 expected lines missing
CAS.ai — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
DSail — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
Bidmachine — partner (reseller) lines only: 210 lines in the file, 400 expected lines missing

Invalid lines

leanback.digital, ESS-D666 RESELLER, b1d30350acaf0176

Corrected file: arbor.mobi app-ads.txt (fixed).

FAQ

Does arbor.mobi have an app-ads.txt?

Yes — https://arbor.mobi/app-ads.txt has 611 lines (checked 19 Oct 2026).

Which ad networks does arbor.mobi work with?

Its app-ads.txt lists Google AdMob, TripleLift, Smaato, PubMatic, OpenX, Index Exchange, Meta Audience Network, VK Ads (myTarget), Liftoff Monetize (Vungle), AppLovin, Mintegral, Unity Ads and 16 more.

Is the app-ads.txt of arbor.mobi correct?