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.

jamcity.com app-ads.txt check

jamcity.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 20 Oct 2026. 5,005 lines, 4,154 unique records, 850 duplicates, 1 invalid lines, 37 ad networks detected.

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

Unity Ads — accounts 1143634, 1143652, 2644968 and 1 more: 162 lines in the file, 2 expected lines missing
Liftoff Monetize (Vungle) — accounts 58910f6a5f5e338431000675, 561e8d976b8d90f61a0045d9: 392 lines in the file
Meta Audience Network — accounts 731447350543316, 684232165242291, 2005249293088944 and 24 more: 27 lines in the file
Google AdMob — accounts pub-1647957307039661, pub-1694638389384549, pub-3467073316664761 and 5 more: 8 lines in the file
DT Exchange (Fyber) — accounts 212081, 75a989c6c032a683b24d01aa00f41503: 400 lines in the file, 3 expected lines missing
ironSource / LevelPlay — accounts 186391, 188065, 252931: 117 lines in the file, 11 expected lines missing
Bidmachine — accounts 139, 1022: 400 lines in the file, 52 expected lines missing
Sovrn — accounts 411915, 563477, 594162 and 4 more: 7 lines in the file
Maticoo (zMaticoo) — accounts 5135063, 114490: 260 lines in the file, 186 expected lines missing
InMobi — accounts ddb41d8a9f434a918d05a0fc9999d9f9, 77d160c02a774ab39a68668bf66bb326, cb6a6239dfec478f818c1ffca00ca440: 164 lines in the file, 110 expected lines missing
PubMatic — account 95054: 1 line in the file
OpenX — accounts 563905670, 564921063: 2 lines in the file
TripleLift — accounts 6998, 14146: 2 lines in the file
CAS.ai — accounts b5a73ae1, babe9c54: 133 lines in the file, 32 expected lines missing
BlueSea — account 204037: 24 lines in the file, 14 expected lines missing
Start.io — account 117514417: 90 lines in the file, 68 expected lines missing
Mintegral — account 19757: 400 lines in the file
Smaato — accounts 1100057628, 1100057546, 1100045438: 3 lines in the file
Moloco — account EOQoz8QkMzTpYjoh: 1 line in the file
AppLovin — accounts d31f89915552d4263e9c5549b1c06867, e3de8cd47d724181ba6cb793b549c69f, e8885d1b2df3ffb2283e7d8a3ad52196: 38 lines in the file
Amazon Publisher Services — account 8fc73247-2c1e-4d31-aa8b-4e42825ab327: 1 line in the file
TikTok Ad Network (Pangle) — accounts 5013446, 9898: 2 lines in the file
TikTok Ads — accounts 1233, 1180: 2 lines in the file
Chartboost — partner (reseller) lines only: 400 lines in the file, 326 expected lines missing
Yandex Ads — partner (reseller) lines only: 139 lines in the file, 29 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 80 lines in the file, 64 expected lines missing
BIGO Ads — partner (reseller) lines only: 400 lines in the file, 324 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 37 lines in the file, 12 expected lines missing
Display.io — partner (reseller) lines only: 11 lines in the file, 21 expected lines missing
DSP Exchange — partner (reseller) lines only: 214 lines in the file, 347 expected lines missing
Monetrix — partner (reseller) lines only: 63 lines in the file, 30 expected lines missing
Prado — partner (reseller) lines only: 20 lines in the file, 7 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 173 lines in the file, 196 expected lines missing
Kidoz — partner (reseller) lines only: 16 lines in the file, 6 expected lines missing
DSail — partner (reseller) lines only: 133 lines in the file, 32 expected lines missing

Invalid lines

lemmatechnologies,1844,RESELLER

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

FAQ

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

Yes — https://jamcity.com/app-ads.txt has 5,005 lines (checked 20 Oct 2026).

Which ad networks does jamcity.com work with?

Its app-ads.txt lists Unity Ads, Liftoff Monetize (Vungle), Meta Audience Network, Google AdMob, DT Exchange (Fyber), ironSource / LevelPlay, Bidmachine, Sovrn, Maticoo (zMaticoo), InMobi, PubMatic, OpenX and 25 more.

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