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.

multicraft.world app-ads.txt check

multicraft.world achieves the best ad optimization: its app-ads.txt has no errors and matches what its 35 ad networks expect (99% of 9,335 lines).

Checked 19 Oct 2026. 5,830 lines, 5,776 unique records, 24 duplicates, 0 invalid lines, 39 ad networks detected.

Ad networks in multicraft.world/app-ads.txt

Display.io — accounts 25290005, 2529: 34 lines in the file
Monetrix — accounts 12081, 142: 95 lines in the file
CAS.ai — account 922e6092: 160 lines in the file, 5 expected lines missing
Google AdMob — accounts pub-1022958838828668, pub-1666359843582959, pub-2418115348772836 and 11 more: 14 lines in the file
Meta Audience Network — accounts 1210467953459280, 805069172997110, 1081332032712445: 3 lines in the file
TikTok Ad Network (Pangle) — accounts 5015768, 86231, 5035457: 3 lines in the file
ironSource / LevelPlay — accounts 218335, 406326, 445197: 128 lines in the file
AppLovin — accounts 1b46f5e3cf2242caea5c383ca959e5dd, 4d391c28b8c9b08646600303640192ea, c0240449e33b7431936ee54233b9ffc9 and 2 more: 40 lines in the file
Unity Ads — accounts 1049822, 135230921, 1773786 and 1 more: 164 lines in the file
Mintegral — accounts 25008, 52286, 71776: 400 lines in the file, 1 expected line missing
Liftoff Monetize (Vungle) — accounts 5730c2af2270cba25f000066, 5c657afed9e6e60012bab5d9, 6a50bc25f28c146c135c2aa5: 393 lines in the file
SuperAwesome — account 422: 6 lines in the file
Kidoz — accounts 11645, 14427: 24 lines in the file
Prado — accounts 15504, 15612: 29 lines in the file
InMobi — accounts 06d15e3ce4434f75b585f2fb7ce2e302, 30ff09752f2b48eb9974d28116cf9ff0, 4d0da524572e4dd8aea20b1e5553937f and 4 more: 278 lines in the file
Chartboost — account 5730bb1a04b0165b75d2e564: 400 lines in the file, 1 expected line missing
Yango Ads — accounts 100032860, 100440221, 10074451 and 253 more: 400 lines in the file
Bidease — account pm0IHPNO2j6y: 50 lines in the file
BIGO Ads — account 10374: 400 lines in the file, 78 expected lines missing
DT Exchange (Fyber) — account 214373: 400 lines in the file
Sovrn — accounts 509119, 547665, 547665-eb: 3 lines in the file
Madex — account 2d576ffe-e44c-494f-95ed-f0ff3a07f9b8: 19 lines in the file
OpenX — accounts 540623812, 541031350, 561436865: 3 lines in the file
Magnite (Rubicon) — accounts 25286, 25288, 26980 and 2 more: 5 lines in the file
Start.io — accounts 125650712, 144185998, 174388014: 160 lines in the file
Maticoo (zMaticoo) — accounts 118642, 5135080, 100749 and 19 more: 400 lines in the file
Verve (PubNative) — accounts 1009903, 1017314, 1017315: 400 lines in the file, 1 expected line missing
Xandr (Microsoft) — account 17564: 1 line in the file
Criteo — account B-060738: 1 line in the file
PubMatic — accounts 163753, 165995: 2 lines in the file
Smaato — account 1100059247: 1 line in the file
TripleLift — accounts 13277, 13277-EB, 13686 and 1 more: 4 lines in the file
Ogury — account 432e59bf-cea1-4835-909f-ce67b46743c4: 18 lines in the file
HyprMX — account 27570864242: 370 lines in the file
BlueSea — account 7138175: 38 lines in the file
VK Ads (myTarget) — partner (reseller) lines only: 143 lines in the file, 1 expected line missing
DSP Exchange — partner (reseller) lines only: 400 lines in the file
DSail — partner (reseller) lines only: 160 lines in the file, 5 expected lines missing
Bidmachine — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing

Corrected file: multicraft.world app-ads.txt (fixed).

FAQ

Does multicraft.world have an app-ads.txt?

Yes — https://multicraft.world/app-ads.txt has 5,830 lines (checked 19 Oct 2026).

Which ad networks does multicraft.world work with?

Its app-ads.txt lists Display.io, Monetrix, CAS.ai, Google AdMob, Meta Audience Network, TikTok Ad Network (Pangle), ironSource / LevelPlay, AppLovin, Unity Ads, Mintegral, Liftoff Monetize (Vungle), SuperAwesome and 27 more.

Is the app-ads.txt of multicraft.world correct?