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.

zynga.com app-ads.txt check

zynga.com is missing out on higher CPMs: its app-ads.txt has 14 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 21 Oct 2026. 9,893 lines, 9,115 unique records, 748 duplicates, 14 invalid lines, 42 ad networks detected.

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

AppLovin — accounts 003f6fdc73e6871d08815a6cbd655151, 0296607b751d1cb365ccc46de82e47c8, 054238c0e3f0c6dbd89dbbfec3681bb2 and 113 more: 151 lines in the file
Xandr (Microsoft) — accounts 12252, 13101, 1507 and 6 more: 9 lines in the file
Amazon Publisher Services — accounts 42df5c79-9a6a-4118-b46f-dd311cf16fb8, 4773e9b2-0505-4577-88d0-f8ddde7e18aa, 9497c599-e539-47f6-853b-74adef65b879: 3 lines in the file
Bidmachine — accounts 424-1, 424-2, 424-3 and 25 more: 400 lines in the file, 23 expected lines missing
Chartboost — accounts 4f26e639cd1cb2f13e00000e, 542576b589b0bb117ed571ba, 58364e3204b01678cdb4e23a and 2 more: 400 lines in the file, 4 expected lines missing
Criteo — accounts 9593, B-062019, B-066465: 3 lines in the file
Meta Audience Network — accounts 10152129083228034, 10152966432629973, 1611195479200249 and 14 more: 17 lines in the file
DT Exchange (Fyber) — accounts 208429, 209382, 210414: 400 lines in the file
Google AdMob — accounts pub-0054876817521062, pub-1593578313036267, pub-1688645265745308 and 26 more: 29 lines in the file
HyprMX — account 23812592631: 327 lines in the file, 43 expected lines missing
Index Exchange — accounts 186245, 188641, 189455 and 4 more: 7 lines in the file
InMobi — accounts 00833f99fc084044a48e28282e332668, 1608141585a54128aec63a17a9ee2a9d, 437cc6a716cb4438b8e0949bb247f6c7 and 6 more: 273 lines in the file, 7 expected lines missing
ironSource / LevelPlay — accounts 190949, 199103, 229845 and 2 more: 130 lines in the file
Sovrn — accounts 411915, 513693, 563477 and 1 more: 4 lines in the file
Mintegral — accounts 18361, 21922: 400 lines in the file, 4 expected lines missing
MobileFuse — accounts 3806, 3876: 2 lines in the file
Ogury — accounts 3f7802578e5acc85ef9fd52b7c454050, 5bbe7af9-d51f-499e-a804-db54798d96f4: 11 lines in the file, 8 expected lines missing
OpenX — accounts 113244, 539408796, 539463602 and 8 more: 11 lines in the file
PubMatic — accounts 156348, 156382, 156849 and 14 more: 17 lines in the file
Verve (PubNative) — accounts 1007139, 1007228, 1007389 and 3 more: 400 lines in the file, 10 expected lines missing
Magnite (Rubicon) — accounts 11784, 15526, 166535 and 9 more: 12 lines in the file
Smaato — accounts 1100023040, 1100036635, 1100037252 and 9 more: 12 lines in the file
Start.io — accounts 113379424, 157659870, 163241862: 107 lines in the file, 53 expected lines missing
TripleLift — accounts 10254, 10522, 11905-eb and 52 more: 55 lines in the file
Unity Ads — accounts 1048191, 1081655, 1224638 and 14 more: 177 lines in the file
Liftoff Monetize (Vungle) — account 56c3a378adccd1cb7e00000a: 387 lines in the file, 4 expected lines missing
Yahoo — accounts 10297, 1112770, 1166006 and 6 more: 9 lines in the file
Maticoo (zMaticoo) — accounts 114490, 5135063: 306 lines in the file, 140 expected lines missing
Display.io — account 2520: 20 lines in the file, 13 expected lines missing
Yandex Ads — partner (reseller) lines only: 144 lines in the file, 24 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 107 lines in the file, 37 expected lines missing
BIGO Ads — partner (reseller) lines only: 400 lines in the file, 186 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 43 lines in the file, 6 expected lines missing
BlueSea — partner (reseller) lines only: 25 lines in the file, 12 expected lines missing
DSP Exchange — partner (reseller) lines only: 374 lines in the file, 187 expected lines missing
Madex — partner (reseller) lines only: 11 lines in the file, 7 expected lines missing
Monetrix — partner (reseller) lines only: 69 lines in the file, 24 expected lines missing
Prado — partner (reseller) lines only: 22 lines in the file, 5 expected lines missing
Kidoz — partner (reseller) lines only: 18 lines in the file, 4 expected lines missing
CAS.ai — partner (reseller) lines only: 137 lines in the file, 28 expected lines missing
DSail — partner (reseller) lines only: 137 lines in the file, 28 expected lines missing

Invalid lines

admanmedia.com, XXX, RESELLER
e-planning.net, 2f3a04630ba9ba3f, RESELLER, RESELLER, c1ba615865ed87b2
flat-ads.com, 153, RSESLLER
richaudience.com, IBgrMXsP4O,'c2'a0RESELLER
rubiconproject.com, 15854, RESELLER 0bfd66d529a55807
sharethrough.com, e6afc1ec, RESELLER, d53b998a7bd4ecd2 // ORTB
singularads, 225023, RESELLER
singularads, 548745, RESELLER
singularads, 895023, RESELLER
smartadserver.com, 3713, RESELLERm 060d053dcf45cbf3
start.io, 116712987 RESELLER
tvisionary.co, 4569021,'c2'a0RESELLER
Remember to replace [yourironSourcePublisherAccountID] with your account ID, which you can get from your account manager.
Remember to replace the OwnerDomain Line with your domain.

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

FAQ

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

Yes — https://zynga.com/app-ads.txt has 9,893 lines (checked 21 Oct 2026).

Which ad networks does zynga.com work with?

Its app-ads.txt lists AppLovin, Xandr (Microsoft), Amazon Publisher Services, Bidmachine, Chartboost, Criteo, Meta Audience Network, DT Exchange (Fyber), Google AdMob, HyprMX, Index Exchange, InMobi and 30 more.

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