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.

monsterstudio.io app-ads.txt check

monsterstudio.io is missing out on higher CPMs: its app-ads.txt has 11 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 8,832 lines, 6,917 unique records, 1,903 duplicates, 11 invalid lines, 42 ad networks detected.

Ad networks in monsterstudio.io/app-ads.txt

AppLovin — accounts 6960393f94a330b823795e47acb04028, abadf38db42f4c6c0de93aab16999c95, 221cf952265a7a89a0000af6ccbeab5e and 1 more: 39 lines in the file
DT Exchange (Fyber) — account 219751: 400 lines in the file, 3 expected lines missing
Criteo — account B-066465: 1 line in the file
OpenX — accounts 544113100, 559912325: 2 lines in the file
Index Exchange — accounts 187666, 195642: 2 lines in the file
BIGO Ads — accounts 0r8hghocmv, 1112349, 20836124 and 5 more: 400 lines in the file
Yandex Ads — accounts 303716767, 104434934, 104056147 and 4 more: 175 lines in the file
Yango Ads — accounts 303716767, 304080065, 330207969: 400 lines in the file, 400 expected lines missing
TikTok Ad Network (Pangle) — accounts 5019668, 64191: 2 lines in the file
Magnite (Rubicon) — accounts 17976, 26442, 26440 and 2 more: 5 lines in the file
Smaato — accounts 1100046656, 1100055863, 1100057628 and 3 more: 6 lines in the file
PubMatic — accounts 159527, 160943, 160944 and 2 more: 5 lines in the file
Xandr (Microsoft) — accounts 9914, 280, 16912 and 3 more: 6 lines in the file
Yahoo — accounts 58701, 59070: 2 lines in the file
Unity Ads — accounts 1081497, 1781317, 1178822: 163 lines in the file
ironSource / LevelPlay — accounts 255995, 206803: 106 lines in the file, 21 expected lines missing
Display.io — account 2409: 18 lines in the file, 15 expected lines missing
Meta Audience Network — accounts 419547638413814, 743016605797289, 379818813457504: 3 lines in the file
Google AdMob — accounts pub-9201426349309188, pub-1450784844774826, pub-4952502709043503 and 9 more: 12 lines in the file
Liftoff Monetize (Vungle) — account 5a6f463e4dbbf27e7e00709b: 391 lines in the file
Mintegral — accounts 22703, 39840: 400 lines in the file
InMobi — accounts 88b260a37eac476999a8351ae7bcc15e, ce9ec93fd82d46e8890740a39af08442, b261b5bdeb1f46adb2c0f1dab9549bf7: 267 lines in the file, 7 expected lines missing
Amazon Publisher Services — accounts e66d9b05-75b2-4949-8090-1f1e31841000, 42df5c79-9a6a-4118-b46f-dd311cf16fb8: 2 lines in the file
Bidmachine — accounts 308, 200: 400 lines in the file, 17 expected lines missing
TripleLift — accounts 7677, 13041: 2 lines in the file
Chartboost — account 65fd648137dd4a9bf501a003: 400 lines in the file, 107 expected lines missing
VK Ads (myTarget) — account 20836124: 160 lines in the file, 15 expected lines missing
Start.io — accounts 163241862, 157659870: 127 lines in the file, 32 expected lines missing
Maticoo (zMaticoo) — account 114490: 296 lines in the file, 149 expected lines missing
Ogury — account 5bbe7af9-d51f-499e-a804-db54798d96f4: 9 lines in the file, 9 expected lines missing
Sovrn — account 411915: 1 line in the file
Bidease — partner (reseller) lines only: 39 lines in the file, 10 expected lines missing
BlueSea — partner (reseller) lines only: 23 lines in the file, 14 expected lines missing
DSP Exchange — partner (reseller) lines only: 393 lines in the file, 168 expected lines missing
Madex — partner (reseller) lines only: 10 lines in the file, 8 expected lines missing
Monetrix — partner (reseller) lines only: 65 lines in the file, 28 expected lines missing
Prado — partner (reseller) lines only: 19 lines in the file, 8 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 222 lines in the file, 147 expected lines missing
Kidoz — partner (reseller) lines only: 15 lines in the file, 7 expected lines missing
CAS.ai — partner (reseller) lines only: 162 lines in the file, 3 expected lines missing
DSail — partner (reseller) lines only: 162 lines in the file, 3 expected lines missing

Invalid lines

indexexchange.com 192143, RESELLER
smartyads.com, 897, fd2bde0ff2e62c5d, RESELLER
singularads,895023,RESELLER
engagemedia.tv, 1063 RESELLER, cb58d2185b16309a
pubmatic.com, 156520, RESELLER, 5d62403b186f2ace (key account for SEA)
pubmatic.com, 160456, RESELLER, 5d62403b186f2ace (key account for India)
ironsrc.com,yeahmobi.com,rubiconproject.com
smaato.com,to be added after mapping,DIRECT,07bcf65f187117b4
singularads, 548745, RESELLER
singularads, 225023, RESELLER
b42d42eb28400efa,targetbetter.com, 6451, RESELLER

Corrected file: monsterstudio.io app-ads.txt (fixed).

FAQ

Does monsterstudio.io have an app-ads.txt?

Yes — https://monsterstudio.io/app-ads.txt has 8,832 lines (checked 20 Oct 2026).

Which ad networks does monsterstudio.io work with?

Its app-ads.txt lists AppLovin, DT Exchange (Fyber), Criteo, OpenX, Index Exchange, BIGO Ads, Yandex Ads, Yango Ads, TikTok Ad Network (Pangle), Magnite (Rubicon), Smaato, PubMatic and 30 more.

Is the app-ads.txt of monsterstudio.io correct?