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.

gcenterstudio.com app-ads.txt check

gcenterstudio.com is missing out on higher CPMs: its app-ads.txt has 4 invalid lines and lists only 1,259 of the 4,354 lines its 11 ad networks expect (71% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 2,558 lines, 1,522 unique records, 901 duplicates, 4 invalid lines, 27 ad networks detected.

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

Google AdMob — accounts pub-5582226006165721, pub-8584710440951870, pub-5706027023452774 and 5 more: 8 lines in the file
Unity Ads — account 1085387: 46 lines in the file, 115 expected lines missing
ironSource / LevelPlay — account 236780: 54 lines in the file, 72 expected lines missing
AppLovin — account c9f947629e0fde641011bc8b22329ffc: 16 lines in the file, 20 expected lines missing
Mintegral — account 38108: 400 lines in the file, 368 expected lines missing
Meta Audience Network — accounts 194268201461692, 356796730456972: 2 lines in the file
InMobi — account b45c1003049246109bcb86289da368e1: 101 lines in the file, 171 expected lines missing
Yandex Ads — account 111136283: 65 lines in the file, 104 expected lines missing
Magnite (Rubicon) — accounts 26442, 26440, 26980 and 1 more: 4 lines in the file
Bidmachine — accounts 200, 1148: 400 lines in the file, 400 expected lines missing
PubMatic — account 159855: 1 line in the file
Liftoff Monetize (Vungle) — partner (reseller) lines only: 173 lines in the file, 217 expected lines missing
Chartboost — partner (reseller) lines only: 325 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 173 lines in the file, 277 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 69 lines in the file, 75 expected lines missing
BIGO Ads — partner (reseller) lines only: 197 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 12 lines in the file, 37 expected lines missing
Display.io — partner (reseller) lines only: 9 lines in the file, 23 expected lines missing
DSP Exchange — partner (reseller) lines only: 200 lines in the file, 361 expected lines missing
Madex — partner (reseller) lines only: 5 lines in the file, 13 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 69 lines in the file, 375 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 295 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 132 lines in the file, 237 expected lines missing
Start.io — partner (reseller) lines only: 30 lines in the file, 127 expected lines missing
CAS.ai — partner (reseller) lines only: 57 lines in the file, 108 expected lines missing
DSail — partner (reseller) lines only: 57 lines in the file, 108 expected lines missing

Invalid lines

esellers as of May 30, 2025
fyber.com,INSERT PUBLISHER ID,DIRECT,1ad675c9de6b5176
--------UndrAds Start--------
--------UndrAds End--------

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

FAQ

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

Yes — https://gcenterstudio.com/app-ads.txt has 2,558 lines (checked 19 Oct 2026).

Which ad networks does gcenterstudio.com work with?

Its app-ads.txt lists Google AdMob, Unity Ads, ironSource / LevelPlay, AppLovin, Mintegral, Meta Audience Network, InMobi, Yandex Ads, Magnite (Rubicon), Bidmachine, PubMatic, Liftoff Monetize (Vungle) and 15 more.

gcenterstudio.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does gcenterstudio.com work with?

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

Other checked domains

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