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.

tudn.com app-ads.txt check

tudn.com is missing out on higher CPMs: its app-ads.txt has 4 invalid lines and lists only 90 of the 348 lines its 14 ad networks expect (74% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 20 Oct 2026. 1,103 lines, 795 unique records, 133 duplicates, 4 invalid lines, 26 ad networks detected.

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

TripleLift — accounts 14840, 14840-EB, 3241 and 5 more: 8 lines in the file
OpenX — accounts 584612716, 540704893, 540634630 and 8 more: 11 lines in the file
Amazon Publisher Services — accounts 3087, 15c3c191-cabc-4517-bd77-b3f373f2f2e6, f4b6596d-7c4a-4dc5-b0a3-2ffe2ce31e33 and 2 more: 5 lines in the file
Index Exchange — accounts 205896, 206031, 207015 and 2 more: 5 lines in the file
Yahoo — accounts 56365, 60176, 59186 and 2 more: 5 lines in the file
Xandr (Microsoft) — accounts 7286, 8408: 2 lines in the file
Google AdMob — accounts pub-5405132603504384, pub-8125709354810880, pub-1336637907932433 and 9 more: 12 lines in the file
Ogury — account 5c2e6d28-2d1b-4bbb-b518-5a7d1d610af9: 5 lines in the file, 13 expected lines missing
InMobi — account 2c82042726ab44e8803458196a731f22: 27 lines in the file, 245 expected lines missing
PubMatic — accounts 157880, 163352, 161062 and 8 more: 11 lines in the file
Magnite (Rubicon) — accounts 13116, 17740, 17280 and 3 more: 6 lines in the file
Criteo — account B-068503: 1 line in the file
Smaato — account 1100058541: 1 line in the file
Sovrn — accounts 380632-eb, 397546: 2 lines in the file
Mintegral — partner (reseller) lines only: 43 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 32 lines in the file, 358 expected lines missing
Chartboost — partner (reseller) lines only: 41 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 14 lines in the file, 400 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 10 lines in the file, 134 expected lines missing
BIGO Ads — partner (reseller) lines only: 46 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 99 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 65 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 21 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 41 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 13 lines in the file, 356 expected lines missing
Bidmachine — partner (reseller) lines only: 87 lines in the file, 400 expected lines missing

Invalid lines

wunderkind.co, 5628, DIRECT (Univision.com)
wunderkind.co, 5711, DIRECT (TUDN.com)
vidoomy.com, {63768}, DIRECT
pubmatic.com, 157880, DIRECT, 5d62403b186f2ace - OB

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

FAQ

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

Yes — https://tudn.com/app-ads.txt has 1,103 lines (checked 20 Oct 2026).

Which ad networks does tudn.com work with?

Its app-ads.txt lists TripleLift, OpenX, Amazon Publisher Services, Index Exchange, Yahoo, Xandr (Microsoft), Google AdMob, Ogury, InMobi, PubMatic, Magnite (Rubicon), Criteo and 14 more.

tudn.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does tudn.com work with?

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

Other checked domains

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