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.

wattpad.com app-ads.txt check

wattpad.com is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 21 Oct 2026. 5,478 lines, 5,153 unique records, 276 duplicates, 1 invalid lines, 36 ad networks detected.

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

AppLovin — account ea23db5061a06af89f37aee68d6688cb: 36 lines in the file
Bidmachine — accounts 1807, 1116, 350: 400 lines in the file, 192 expected lines missing
Sovrn — accounts 411915, 563477, 594162 and 5 more: 8 lines in the file
Maticoo (zMaticoo) — accounts 5135063, 114490: 278 lines in the file, 168 expected lines missing
Magnite (Rubicon) — account 7941: 1 line in the file
InMobi — accounts ddb41d8a9f434a918d05a0fc9999d9f9, 32d0f8d5d32848bd8bd8b27b71b7d1e4, c5bdba0b379547e88cefde7f47feab53: 265 lines in the file, 9 expected lines missing
PubMatic — accounts 95054, 166835, 168503: 3 lines in the file
OpenX — accounts 563905670, 564921063, 564972066: 3 lines in the file
TripleLift — accounts 6998, 14146, 3273 and 1 more: 4 lines in the file
CAS.ai — accounts b5a73ae1, babe9c54: 135 lines in the file, 30 expected lines missing
BlueSea — account 204037: 25 lines in the file, 13 expected lines missing
Start.io — account 117514417: 95 lines in the file, 63 expected lines missing
Xandr (Microsoft) — accounts 10815, 16340: 2 lines in the file
Chartboost — account 5715900504b01630fe7bb4fb: 400 lines in the file, 1 expected line missing
DT Exchange (Fyber) — account 216611: 400 lines in the file
Index Exchange — accounts 191598, 187733, 185174 and 3 more: 6 lines in the file
ironSource / LevelPlay — account 298857: 126 lines in the file
Liftoff Monetize (Vungle) — account 56b2844d24342c3622000032: 391 lines in the file
Mintegral — account 30811: 400 lines in the file, 1 expected line missing
Smaato — accounts 1100057628, 1100057546: 2 lines in the file
TikTok Ad Network (Pangle) — accounts 5018138, 5017598: 2 lines in the file
Unity Ads — account 2722101: 161 lines in the file
Google AdMob — accounts pub-3309952587256974, pub-4426210246867786: 2 lines in the file
Yandex Ads — partner (reseller) lines only: 142 lines in the file, 26 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 85 lines in the file, 59 expected lines missing
BIGO Ads — partner (reseller) lines only: 400 lines in the file, 269 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: 15 lines in the file, 17 expected lines missing
DSP Exchange — partner (reseller) lines only: 264 lines in the file, 297 expected lines missing
Monetrix — partner (reseller) lines only: 65 lines in the file, 28 expected lines missing
Prado — partner (reseller) lines only: 22 lines in the file, 5 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 215 lines in the file, 154 expected lines missing
Kidoz — partner (reseller) lines only: 18 lines in the file, 4 expected lines missing
DSail — partner (reseller) lines only: 135 lines in the file, 30 expected lines missing

Invalid lines

lemmatechnologies,1844,RESELLER

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

FAQ

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

Yes — https://wattpad.com/app-ads.txt has 5,478 lines (checked 21 Oct 2026).

Which ad networks does wattpad.com work with?

Its app-ads.txt lists AppLovin, Bidmachine, Sovrn, Maticoo (zMaticoo), Magnite (Rubicon), InMobi, PubMatic, OpenX, TripleLift, CAS.ai, BlueSea, Start.io and 24 more.

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