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.

h2tstudio.com app-ads.txt check

h2tstudio.com is missing out on higher CPMs: its app-ads.txt has 5 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 19 Oct 2026. 9,132 lines, 4,903 unique records, 4,123 duplicates, 5 invalid lines, 37 ad networks detected.

Ad networks in h2tstudio.com/app-ads.txt

Google AdMob — accounts pub-3297826949868421, pub-9819920607806935, pub-6644912090743173: 3 lines in the file
Unity Ads — account 2309548: 158 lines in the file, 3 expected lines missing
AppLovin — account 9bcae6e46fe9a67d1daa482360bbfd26: 36 lines in the file
PubMatic — accounts 159856, 160921: 2 lines in the file
Magnite (Rubicon) — accounts 26442, 26440, 25512 and 1 more: 4 lines in the file
Meta Audience Network — account 100786584160335: 1 line in the file
Liftoff Monetize (Vungle) — account 630ef0afa06121001bbb55a9: 313 lines in the file, 78 expected lines missing
Mintegral — account 32080: 400 lines in the file, 66 expected lines missing
InMobi — accounts cb6a6239dfec478f818c1ffca00ca440, 3b9d4e4721334b5394ecdd3297d48cb8: 196 lines in the file, 77 expected lines missing
Amazon Publisher Services — account a570e3a1-9a47-49d6-8b66-40091dfb6a53: 1 line in the file
DT Exchange (Fyber) — account 219676: 400 lines in the file
Yandex Ads — accounts 105267487, 308495899: 154 lines in the file, 16 expected lines missing
Smaato — account 1100057628: 1 line in the file
Maticoo (zMaticoo) — accounts 114490, 5135063: 277 lines in the file, 169 expected lines missing
Bidmachine — accounts 200, 994: 400 lines in the file, 74 expected lines missing
BIGO Ads — account 23167157: 400 lines in the file, 9 expected lines missing
Criteo — account SWH94X: 1 line in the file
Sovrn — accounts 411915, 563477: 2 lines in the file
Xandr (Microsoft) — accounts 16912, 15686: 2 lines in the file
OpenX — account 540396775: 1 line in the file
ironSource / LevelPlay — partner (reseller) lines only: 84 lines in the file, 41 expected lines missing
Chartboost — partner (reseller) lines only: 400 lines in the file, 223 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 106 lines in the file, 38 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 38 lines in the file, 11 expected lines missing
BlueSea — partner (reseller) lines only: 23 lines in the file, 14 expected lines missing
Display.io — partner (reseller) lines only: 16 lines in the file, 16 expected lines missing
DSP Exchange — partner (reseller) lines only: 288 lines in the file, 273 expected lines missing
Madex — partner (reseller) lines only: 5 lines in the file, 13 expected lines missing
Monetrix — partner (reseller) lines only: 59 lines in the file, 34 expected lines missing
Prado — partner (reseller) lines only: 16 lines in the file, 11 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 208 lines in the file, 161 expected lines missing
Start.io — partner (reseller) lines only: 123 lines in the file, 34 expected lines missing
Kidoz — partner (reseller) lines only: 12 lines in the file, 10 expected lines missing
CAS.ai — partner (reseller) lines only: 144 lines in the file, 21 expected lines missing
DSail — partner (reseller) lines only: 144 lines in the file, 21 expected lines missing

Invalid lines

engagemedia.tv, 1063 RESELLER, cb58d2185b16309a
singularads, 548745, RESELLER
── Tier 1 ──────────────────────────────
── Tier 2 ──────────────────────────────
── Tier 3 ──────────────────────────────

Corrected file: h2tstudio.com app-ads.txt (fixed).

FAQ

Does h2tstudio.com have an app-ads.txt?

Yes — https://h2tstudio.com/app-ads.txt has 9,132 lines (checked 19 Oct 2026).

Which ad networks does h2tstudio.com work with?

Its app-ads.txt lists Google AdMob, Unity Ads, AppLovin, PubMatic, Magnite (Rubicon), Meta Audience Network, Liftoff Monetize (Vungle), Mintegral, InMobi, Amazon Publisher Services, DT Exchange (Fyber), Yandex Ads and 25 more.

Is the app-ads.txt of h2tstudio.com correct?