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.

nex-sphere.dev app-ads.txt check

nex-sphere.dev is almost fully optimized: its app-ads.txt has no errors and matches 99.9% of the 1,144 lines its 5 ad networks expect — minor optimisation required: 1 line is missing.

Checked 21 Oct 2026. 1,323 lines, 1,147 unique records, 171 duplicates, 0 invalid lines, 24 ad networks detected.

Ad networks in nex-sphere.dev/app-ads.txt

Google AdMob — account pub-3891353847321850: 1 line in the file
Meta Audience Network — account 1478248576858400: 1 line in the file
Vungle — account 6a3240abe92d4e459e0d49a8: 359 lines in the file, 1 expected line missing
AppLovin — account ca3f8e7ce7d362b3405f8ce00ec83a91: 36 lines in the file
Mintegral — account 74160: 400 lines in the file
Unity Ads — partner (reseller) lines only: 45 lines in the file, 115 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 44 lines in the file, 81 expected lines missing
Chartboost — partner (reseller) lines only: 319 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 103 lines in the file, 168 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 173 lines in the file, 277 expected lines missing
Yandex Ads — partner (reseller) lines only: 73 lines in the file, 95 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 72 lines in the file, 72 expected lines missing
BIGO Ads — partner (reseller) lines only: 219 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 13 lines in the file, 36 expected lines missing
DSP Exchange — partner (reseller) lines only: 136 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 72 lines in the file, 372 expected lines missing
Monetrix — partner (reseller) lines only: 20 lines in the file, 73 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 266 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 97 lines in the file, 272 expected lines missing
Start.io — partner (reseller) lines only: 25 lines in the file, 132 expected lines missing
CAS.ai — partner (reseller) lines only: 66 lines in the file, 99 expected lines missing
DSail — partner (reseller) lines only: 66 lines in the file, 99 expected lines missing
Bidmachine — partner (reseller) lines only: 368 lines in the file, 400 expected lines missing

Corrected file: nex-sphere.dev app-ads.txt (fixed).

FAQ

Does nex-sphere.dev have an app-ads.txt?

Yes — https://nex-sphere.dev/app-ads.txt has 1,323 lines (checked 21 Oct 2026).

Which ad networks does nex-sphere.dev work with?

Its app-ads.txt lists Google AdMob, Meta Audience Network, Vungle, AppLovin, Mintegral, Unity Ads, ironSource / LevelPlay, Chartboost, InMobi, DT Exchange (Fyber), Yandex Ads, VK Ads (myTarget) and 12 more.

Is the app-ads.txt of nex-sphere.dev correct?