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.

ludo.ooo app-ads.txt check

ludo.ooo 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 20 Oct 2026. 3,580 lines, 2,442 unique records, 1,070 duplicates, 5 invalid lines, 30 ad networks detected.

Ad networks in ludo.ooo/app-ads.txt

Google AdMob — accounts pub-1986740755330416, pub-6127428163233573, pub-8766006423657606 and 5 more: 8 lines in the file
Chartboost — account 63359cf7d4a865070043994f: 400 lines in the file, 1 expected line missing
Unity Ads — account 1320796: 123 lines in the file, 38 expected lines missing
AppLovin — account 9e1d2fb52d32bd094d60c5dfc0048544: 36 lines in the file
InMobi — account 4917105417f5474dbe67e941770a0dbb: 192 lines in the file, 80 expected lines missing
DT Exchange (Fyber) — account 218900: 400 lines in the file, 29 expected lines missing
PubMatic — accounts 159856, 159855: 2 lines in the file
ironSource / LevelPlay — account 112761: 95 lines in the file, 31 expected lines missing
Display.io — account 2520: 10 lines in the file, 23 expected lines missing
Liftoff Monetize (Vungle) — account 63ea4a1b48f3c800143e8266: 360 lines in the file, 31 expected lines missing
Amazon Publisher Services — account d386e534-74f8-451f-92b4-ce83654e2ba3: 1 line in the file
Magnite (Rubicon) — account 26884: 1 line in the file
TikTok Ad Network (Pangle) — account 5008152: 1 line in the file
Mintegral — partner (reseller) lines only: 400 lines in the file, 42 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 82 lines in the file, 62 expected lines missing
BIGO Ads — partner (reseller) lines only: 351 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: 29 lines in the file, 20 expected lines missing
BlueSea — partner (reseller) lines only: 11 lines in the file, 26 expected lines missing
DSP Exchange — partner (reseller) lines only: 291 lines in the file, 270 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 121 lines in the file, 323 expected lines missing
Monetrix — partner (reseller) lines only: 28 lines in the file, 65 expected lines missing
Prado — partner (reseller) lines only: 15 lines in the file, 12 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 166 lines in the file, 203 expected lines missing
Start.io — partner (reseller) lines only: 44 lines in the file, 113 expected lines missing
Kidoz — partner (reseller) lines only: 11 lines in the file, 11 expected lines missing
CAS.ai — partner (reseller) lines only: 83 lines in the file, 82 expected lines missing
DSail — partner (reseller) lines only: 83 lines in the file, 82 expected lines missing
Bidmachine — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing

Invalid lines

yahoo.com, 58905, RESELLER e1a5b5b6e3255540
bidvol.com, RESELLER, 93287
--------UndrAds Start--------
--------UndrAds End--------
mintegral.com, your PublisherID, DIRECT, 0aeed750c80d6423

Corrected file: ludo.ooo app-ads.txt (fixed).

FAQ

Does ludo.ooo have an app-ads.txt?

Yes — https://ludo.ooo/app-ads.txt has 3,580 lines (checked 20 Oct 2026).

Which ad networks does ludo.ooo work with?

Its app-ads.txt lists Google AdMob, Chartboost, Unity Ads, AppLovin, InMobi, DT Exchange (Fyber), PubMatic, ironSource / LevelPlay, Display.io, Liftoff Monetize (Vungle), Amazon Publisher Services, Magnite (Rubicon) and 18 more.

Is the app-ads.txt of ludo.ooo correct?