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.

underwater.games app-ads.txt check

underwater.games is missing out on higher CPMs: its app-ads.txt has 5 invalid lines and lists only 5,010 of the 5,722 lines its 21 ad networks expect (12% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 5,861 lines, 4,779 unique records, 1,027 duplicates, 5 invalid lines, 37 ad networks detected.

Ad networks in underwater.games/app-ads.txt

Google AdMob — accounts pub-8534698065788137, pub-7279990999620104: 2 lines in the file
Meta Audience Network — accounts 5930008713692344, 1603700710496723, 1232791818019121 and 2 more: 5 lines in the file
AppLovin — account 5f42f2340438c53022e769dc818ed848: 36 lines in the file
Unity Ads — account 4123003: 142 lines in the file, 19 expected lines missing
Liftoff Monetize (Vungle) — account 651a9fcab1392d0011243cc3: 365 lines in the file, 26 expected lines missing
TikTok Ad Network (Pangle) — account 5013923: 1 line in the file
Mintegral — account 40725: 400 lines in the file, 39 expected lines missing
Amazon Publisher Services — account b7604cca-5a9b-4902-9715-a29365a84252: 1 line in the file
Bidmachine — accounts 545, 545-1: 400 lines in the file, 290 expected lines missing
DT Exchange (Fyber) — accounts 216762, 223376: 400 lines in the file, 27 expected lines missing
InMobi — accounts 16bab1ed778d438bb505c23616ecd242, ddb41d8a9f434a918d05a0fc9999d9f9: 263 lines in the file, 10 expected lines missing
Magnite (Rubicon) — account 166535: 1 line in the file
Smaato — accounts 1100057628, 1100057546: 2 lines in the file
Maticoo (zMaticoo) — accounts 114490, 5135063: 260 lines in the file, 186 expected lines missing
PubMatic — accounts 167038, 95054: 2 lines in the file
Sovrn — accounts 411915, 563477, 583061 and 5 more: 8 lines in the file
OpenX — accounts 563905670, 564921063, 564972066: 3 lines in the file
TripleLift — accounts 6998, 14146: 2 lines in the file
BlueSea — account 204037: 25 lines in the file, 13 expected lines missing
Start.io — accounts 179510621, 117514417: 89 lines in the file, 70 expected lines missing
CAS.ai — accounts b5a73ae1, babe9c54: 133 lines in the file, 32 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 83 lines in the file, 42 expected lines missing
Chartboost — partner (reseller) lines only: 400 lines in the file, 230 expected lines missing
Yandex Ads — partner (reseller) lines only: 140 lines in the file, 28 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 90 lines in the file, 54 expected lines missing
BIGO Ads — partner (reseller) lines only: 400 lines in the file, 304 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
Display.io — partner (reseller) lines only: 11 lines in the file, 21 expected lines missing
DSP Exchange — partner (reseller) lines only: 275 lines in the file, 286 expected lines missing
Madex — partner (reseller) lines only: 5 lines in the file, 13 expected lines missing
Monetrix — partner (reseller) lines only: 64 lines in the file, 29 expected lines missing
Prado — partner (reseller) lines only: 17 lines in the file, 10 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 202 lines in the file, 167 expected lines missing
Kidoz — partner (reseller) lines only: 14 lines in the file, 8 expected lines missing
DSail — partner (reseller) lines only: 133 lines in the file, 32 expected lines missing

Invalid lines

inmobi.com, 16bab1ed778d438bb505c23616ecd242, DIRECT, 83e75a7ae333ca9drubiconproject.com, 11726, RESELLER, 0bfd66d529a55807rubiconproject.com, 12266, RESELLER, 0bfd66d529a55807blis.com, 33, RESELLER,
singularads, 548745, RESELLER
fyber.com,INSERT PUBLISHER ID,DIRECT
fyber.com,INSERT PUBLISHER ID,DIRECT,1ad675c9de6b5176
lemmatechnologies,1844,RESELLER

Corrected file: underwater.games app-ads.txt (fixed).

FAQ

Does underwater.games have an app-ads.txt?

Yes — https://underwater.games/app-ads.txt has 5,861 lines (checked 19 Oct 2026).

Which ad networks does underwater.games work with?

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

underwater.games app-ads.txt check

Ad networks in underwater.games/app-ads.txt

Invalid lines

FAQ

Does underwater.games have an app-ads.txt?

Which ad networks does underwater.games work with?

Is the app-ads.txt of underwater.games correct?

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