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.

mettacode.dev app-ads.txt check

mettacode.dev is missing out on higher CPMs: its app-ads.txt has 2 invalid lines and lists only 247 of the 2,939 lines its 7 ad networks expect (92% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 23 Oct 2026. 1,399 lines, 1,233 unique records, 82 duplicates, 2 invalid lines, 24 ad networks detected.

Ad networks in mettacode.dev/app-ads.txt

InMobi — account e0d382b5045c445f96d657dbd01dc0ef: 83 lines in the file, 189 expected lines missing
AppLovin — accounts 8cba443e8b6fca256802b4a773cf9cc6, 3df24559f78967231d97cbd0942563b9: 10 lines in the file, 27 expected lines missing
Google AdMob — accounts pub-3834929667159972, pub-3940256099942544, pub-4272971530084173: 3 lines in the file
Bidmachine — account 213531: 169 lines in the file, 400 expected lines missing
Magnite (Rubicon) — accounts 17352, 13136: 2 lines in the file
PubMatic — account 159855: 1 line in the file
Index Exchange — account 199442: 1 line in the file
Mintegral — partner (reseller) lines only: 257 lines in the file, 400 expected lines missing
Unity Ads — partner (reseller) lines only: 28 lines in the file, 132 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 38 lines in the file, 87 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 127 lines in the file, 263 expected lines missing
Chartboost — partner (reseller) lines only: 237 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 65 lines in the file, 385 expected lines missing
Yandex Ads — partner (reseller) lines only: 25 lines in the file, 143 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 75 lines in the file, 69 expected lines missing
BIGO Ads — partner (reseller) lines only: 111 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 222 lines in the file, 339 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 43 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 163 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 68 lines in the file, 301 expected lines missing
Start.io — partner (reseller) lines only: 13 lines in the file, 144 expected lines missing
CAS.ai — partner (reseller) lines only: 20 lines in the file, 145 expected lines missing
DSail — partner (reseller) lines only: 20 lines in the file, 145 expected lines missing

Invalid lines

facebook.com, Business ID, RESELLER, c3e20eee3f780d68
singularads, 895023, RESELLER

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

FAQ

Does mettacode.dev have an app-ads.txt?

Yes — https://mettacode.dev/app-ads.txt has 1,399 lines (checked 23 Oct 2026).

Which ad networks does mettacode.dev work with?

Its app-ads.txt lists InMobi, AppLovin, Google AdMob, Bidmachine, Magnite (Rubicon), PubMatic, Index Exchange, Mintegral, Unity Ads, ironSource / LevelPlay, Liftoff Monetize (Vungle), Chartboost and 12 more.

mettacode.dev app-ads.txt check

Ad networks in mettacode.dev/app-ads.txt

Invalid lines

FAQ

Does mettacode.dev have an app-ads.txt?

Which ad networks does mettacode.dev work with?

Is the app-ads.txt of mettacode.dev correct?

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