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.

find.smapps.org app-ads.txt check

find.smapps.org 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. 7,222 lines, 6,634 unique records, 584 duplicates, 1 invalid lines, 40 ad networks detected.

Ad networks in find.smapps.org/app-ads.txt

DT Exchange (Fyber) — account 227882: 400 lines in the file
Unity Ads — account 23173: 161 lines in the file
InMobi — accounts a964f538c0e64254bbe0f315dbcb6510, ddb41d8a9f434a918d05a0fc9999d9f9: 265 lines in the file, 8 expected lines missing
Meta Audience Network — account 2325812070787941: 1 line in the file
Google AdMob — accounts pub-9998317147651733, pub-8899876049562381: 2 lines in the file
ironSource / LevelPlay — account 262531: 126 lines in the file
Liftoff Monetize (Vungle) — account 561e8d936b8d90f61a000f17: 391 lines in the file
Mintegral — account 44403: 400 lines in the file
Smaato — accounts 1100057628, 1100057546, 1100056229: 3 lines in the file
Maticoo (zMaticoo) — accounts 114490, 5135063: 309 lines in the file, 137 expected lines missing
Chartboost — account 51fbb7ad17ba476d5a000009: 400 lines in the file, 1 expected line missing
TikTok Ad Network (Pangle) — account 5006065: 1 line in the file
Sovrn — accounts 411915, 563477, 583061 and 7 more: 10 lines in the file
Magnite (Rubicon) — accounts 26980, 25512, 166535 and 1 more: 4 lines in the file
Xandr (Microsoft) — accounts 15686, 16912, 10815: 3 lines in the file
Bidmachine — account 1095: 400 lines in the file
Criteo — account SWH94X: 1 line in the file
OpenX — accounts 540396775, 563905670, 564921063 and 1 more: 4 lines in the file
PubMatic — accounts 95054, 165932, 166924 and 1 more: 4 lines in the file
TripleLift — accounts 6998, 14146: 2 lines in the file
BlueSea — account 204037: 27 lines in the file, 11 expected lines missing
Start.io — accounts 179510621, 117514417: 127 lines in the file, 32 expected lines missing
Verve (PubNative) — account 1016411: 400 lines in the file, 8 expected lines missing
Amazon Publisher Services — account 303685fa-fad8-4b02-b1d5-cc653187bc3b: 1 line in the file
Ogury — account 4b1f3330-94c4-428a-92cc-5521aad8301c: 18 lines in the file
CAS.ai — accounts b5a73ae1, babe9c54: 144 lines in the file, 21 expected lines missing
BIGO Ads — accounts 23170949, vjx2wdtp99, bh95hizf03 and 14 more: 400 lines in the file
AppLovin — account 86543f648012b73655ab8bc23b613b28: 36 lines in the file
Yandex Ads — partner (reseller) lines only: 150 lines in the file, 18 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 96 lines in the file, 48 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 41 lines in the file, 8 expected lines missing
Display.io — partner (reseller) lines only: 11 lines in the file, 21 expected lines missing
DSP Exchange — partner (reseller) lines only: 366 lines in the file, 195 expected lines missing
Madex — partner (reseller) lines only: 8 lines in the file, 10 expected lines missing
Monetrix — partner (reseller) lines only: 68 lines in the file, 25 expected lines missing
Prado — partner (reseller) lines only: 23 lines in the file, 4 expected lines missing
HyprMX — partner (reseller) lines only: 255 lines in the file, 114 expected lines missing
Kidoz — partner (reseller) lines only: 19 lines in the file, 3 expected lines missing
DSail — partner (reseller) lines only: 144 lines in the file, 21 expected lines missing

Invalid lines

vungle.com, [561e8d936b8d90f61a000f17], DIRECT, c107d686becd2d77

Corrected file: find.smapps.org app-ads.txt (fixed).

FAQ

Does find.smapps.org have an app-ads.txt?

Yes — https://find.smapps.org/app-ads.txt has 7,222 lines (checked 20 Oct 2026).

Which ad networks does find.smapps.org work with?

Its app-ads.txt lists DT Exchange (Fyber), Unity Ads, InMobi, Meta Audience Network, Google AdMob, ironSource / LevelPlay, Liftoff Monetize (Vungle), Mintegral, Smaato, Maticoo (zMaticoo), Chartboost, TikTok Ad Network (Pangle) and 28 more.

Is the app-ads.txt of find.smapps.org correct?