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.

playducky.com app-ads.txt check

playducky.com is missing out on higher CPMs: its app-ads.txt has 52 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 19 Oct 2026. 15,534 lines, 11,406 unique records, 4,076 duplicates, 52 invalid lines, 43 ad networks detected.

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

Meta Audience Network — accounts 734523668072508, 745421126967853, 903413267324613 and 105 more: 108 lines in the file
AppLovin — account 2631563ecac1a76be71a763d792d033f: 36 lines in the file
Xandr (Microsoft) — accounts 10490, 10605, 11452 and 40 more: 43 lines in the file
Amazon Publisher Services — accounts 6900db45-7b4d-405c-a843-76bebbf1d7db, 80cbcf46-fa75-4b05-b841-2df12bd3bfee, 42df5c79-9a6a-4118-b46f-dd311cf16fb8: 3 lines in the file
Chartboost — account 5fd8cad74cb71f087da9ccb5: 400 lines in the file, 2 expected lines missing
Criteo — accounts 155036, 174835, 180031 and 18 more: 21 lines in the file
DT Exchange (Fyber) — account 213112: 400 lines in the file, 37 expected lines missing
Google AdMob — accounts pub-1514325231256439, pub-1835489473992347, pub-2930805104418204 and 24 more: 27 lines in the file
HyprMX — account 24241234607: 353 lines in the file, 17 expected lines missing
Index Exchange — accounts 183635, 183875, 183920 and 16 more: 19 lines in the file
InMobi — accounts 22e5354e453f49348325184e25464adb, 30f3571d1dec45cf80d13b74ed1fffb2, 3a4f7da341dd490cbb7dde02b126275e and 24 more: 294 lines in the file, 4 expected lines missing
ironSource / LevelPlay — accounts 158283, 277953: 127 lines in the file
Sovrn — accounts 268876, 270791, 280159-eb and 21 more: 24 lines in the file
Mintegral — accounts 23183, 22942: 400 lines in the file
MobileFuse — accounts 2281, 240, 4271 and 1 more: 4 lines in the file
Ogury — accounts e91052177a44df900ef9977b4b8314fe, 5733e781-f442-49de-bf5f-aa4988e9b5b9, 104723a2-4983-40a3-9079-43f518d75b0b and 1 more: 13 lines in the file, 8 expected lines missing
OpenX — accounts 537125356, 537143344, 537149888 and 35 more: 38 lines in the file
TikTok Ad Network (Pangle) — accounts 44274, 9898, 5006878: 3 lines in the file
PubMatic — accounts 120391, 133799, 154037 and 65 more: 68 lines in the file
Verve (PubNative) — accounts 1004796, 1006576, 1006951 and 4 more: 400 lines in the file, 66 expected lines missing
Magnite (Rubicon) — accounts 19654, 11726, 11784 and 50 more: 53 lines in the file
Smaato — accounts 1100021580, 1100042823, 1100044045 and 16 more: 19 lines in the file
Start.io — accounts 171568908, 163241862, 157659870 and 2 more: 130 lines in the file, 32 expected lines missing
TripleLift — accounts 11527-EB, 11527, 2792 and 11 more: 14 lines in the file
Unity Ads — account 2390423: 157 lines in the file, 4 expected lines missing
Liftoff Monetize (Vungle) — account 5ec6f4dbdae5f50015c2980b: 387 lines in the file, 4 expected lines missing
Yahoo — accounts 1510636, 55771, 57872 and 8 more: 11 lines in the file
Yandex Ads — accounts deeef39138bd93e831f32f34bb17a834, 98570934, 95418500 and 2 more: 173 lines in the file
Display.io — account 156748: 25 lines in the file, 8 expected lines missing
BIGO Ads — accounts 11320313, 1012, 1013 and 1 more: 400 lines in the file, 1 expected line missing
Bidmachine — accounts 349, 349-1, 349-2 and 2 more: 400 lines in the file, 49 expected lines missing
VK Ads (myTarget) — account 11320313: 144 lines in the file, 31 expected lines missing
Maticoo (zMaticoo) — accounts 115617, 114490, 71864 and 3 more: 339 lines in the file, 111 expected lines missing
Madex — account 084ae2f2-849e-11ef-bc8c-1d64a1a1e739: 18 lines in the file, 1 expected line missing
Bidease — accounts bidease_publisher_2, bidease_seller_45: 50 lines in the file, 1 expected line missing
CAS.ai — account b5a73ae1: 165 lines in the file
Prado — account 15571: 28 lines in the file
Yango Ads — accounts 95418500, 55753107, 96804212 and 6 more: 400 lines in the file, 400 expected lines missing
BlueSea — accounts 7138144, 204037, 7138153: 31 lines in the file, 9 expected lines missing
DSP Exchange — partner (reseller) lines only: 400 lines in the file, 94 expected lines missing
Monetrix — partner (reseller) lines only: 65 lines in the file, 28 expected lines missing
Kidoz — partner (reseller) lines only: 22 lines in the file
DSail — partner (reseller) lines only: 165 lines in the file

Invalid lines

9mediaonline.com, Direct, 1a34c
adsparc, 986, RESELLER
fyber.com, INSERT PUBLISHER ID, DIRECT
google.com, pub-3805568091292313, f08c47fec0942fa0, RESELLER
leanback.digital, ESS-D666 RESELLER, b1d30350acaf0176
opera.com, pub5296098761088, RESELLER 55a0c5fd61378de3
pubmatic.com, 120391, 5d62403b186f2ace, RESELLER
rhy, 3463482822, RESELLER, a670c89d4a324e47
rubiconproject.com, 16568, 0bfd66d529a55807, RESELLER
smaato.com, 1100052485, RESELLER 07bcf65f187117b4
smartyads.com, 1762, fd2bde0ff2e62c5d, DIRECT
smartyads.com, 897, fd2bde0ff2e62c5d, RESELLER
stitchvideo.tv, RESELLER #stitchvideo
yahoo.com, 58905, RESELLER e1a5b5b6e3255540
e-planning.net, DIRECT, 924f363440f7256b

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

FAQ

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

Yes — https://playducky.com/app-ads.txt has 15,534 lines (checked 19 Oct 2026).

Which ad networks does playducky.com work with?

Its app-ads.txt lists Meta Audience Network, AppLovin, Xandr (Microsoft), Amazon Publisher Services, Chartboost, Criteo, DT Exchange (Fyber), Google AdMob, HyprMX, Index Exchange, InMobi, ironSource / LevelPlay and 31 more.

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