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.

best.place app-ads.txt check

best.place is missing out on higher CPMs: its app-ads.txt has 10 invalid lines and lists only 6,104 of the 7,217 lines its 36 ad networks expect (15% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 23 Oct 2026. 21,395 lines, 8,884 unique records, 12,400 duplicates, 10 invalid lines, 42 ad networks detected.

Ad networks in best.place/app-ads.txt

Google AdMob — accounts pub-6542675155639392, pub-2760338306285767, pub-2233829666677759 and 11 more: 14 lines in the file
Unity Ads — accounts 2150222, 3101412, 1679789 and 1 more: 164 lines in the file
Liftoff Monetize (Vungle) — accounts 60a23cceb9c5d40015749c36, 60114173eca1f300150d7451, 5f064bf93191d60018f0fd5a: 364 lines in the file, 29 expected lines missing
ironSource / LevelPlay — accounts 274875, 326078, 232331: 115 lines in the file, 13 expected lines missing
Mintegral — accounts 56310, 25488, 14228: 400 lines in the file
VK Ads (myTarget) — account 3745148: 145 lines in the file, 30 expected lines missing
Bidease — account bidease_publisher_9: 44 lines in the file, 6 expected lines missing
BIGO Ads — accounts 1114417, 1481, jq327s9644: 400 lines in the file, 29 expected lines missing
Maticoo (zMaticoo) — account 5135063: 304 lines in the file, 141 expected lines missing
Yandex Ads — accounts 91350352, 3540268, 106057797 and 1 more: 172 lines in the file
Magnite (Rubicon) — accounts 26442, 26440, 25512 and 5 more: 8 lines in the file
Bidmachine — accounts 200, 581, 328 and 1 more: 400 lines in the file, 388 expected lines missing
TikTok Ad Network (Pangle) — accounts 5017342, 63949, 4481: 3 lines in the file
AppLovin — accounts c805933783dd0771cacb8a355af37455, 8e6ade4d530b8806233d3a9fd136caae, 73b7784722bfc9231bdcca4634c3cab5 and 1078 more: 400 lines in the file
Meta Audience Network — accounts 140084937554557, 1727906230603391: 2 lines in the file
InMobi — accounts 59930b6636384db1b6811cef03bd2114, ddb41d8a9f434a918d05a0fc9999d9f9, cb6a6239dfec478f818c1ffca00ca440 and 5 more: 238 lines in the file, 41 expected lines missing
DT Exchange (Fyber) — accounts 214105, 209032: 400 lines in the file
Yango Ads — accounts 95954877, 3540268, 106057797 and 1 more: 400 lines in the file, 400 expected lines missing
Chartboost — accounts 615ee05eea407307c9c0ae1b, 5dc49a81c4d80c0a35b695de: 400 lines in the file, 1 expected line missing
Verve (PubNative) — accounts 1008242, 1009557, 1016935 and 4 more: 400 lines in the file, 67 expected lines missing
Smaato — accounts 1100056947, 1100049696, 1100048585 and 5 more: 8 lines in the file
CAS.ai — account babe9c54: 165 lines in the file
Start.io — accounts 179510621, 117514417, 163241862 and 1 more: 146 lines in the file, 15 expected lines missing
Sovrn — accounts 411915, 563477, 555137 and 9 more: 12 lines in the file
PubMatic — accounts 95054, 163009, 157743 and 8 more: 11 lines in the file
OpenX — accounts 563905670, 566756867, 564020680 and 3 more: 6 lines in the file
TripleLift — accounts 6998, 9636, 8614 and 6 more: 9 lines in the file
Xandr (Microsoft) — accounts 16912, 15686, 9726 and 2 more: 5 lines in the file
Index Exchange — accounts 213773, 199012, 192585 and 2 more: 5 lines in the file
Amazon Publisher Services — accounts b1598423-cb0c-4a5e-bafb-6ab071a3e8b8, 42df5c79-9a6a-4118-b46f-dd311cf16fb8: 2 lines in the file
MobileFuse — account 4077: 1 line in the file
Criteo — accounts B-061015, B-066465, B-063382: 3 lines in the file
BlueSea — account 204037: 26 lines in the file, 12 expected lines missing
Monetrix — account 174: 71 lines in the file, 23 expected lines missing
Ogury — accounts 5bbe7af9-d51f-499e-a804-db54798d96f4, 6a67ff65d2292274271a0ae3858d7916: 12 lines in the file, 7 expected lines missing
HyprMX — account 23322716087: 367 lines in the file, 3 expected lines missing
Display.io — partner (reseller) lines only: 17 lines in the file, 15 expected lines missing
DSP Exchange — partner (reseller) lines only: 400 lines in the file, 105 expected lines missing
Madex — partner (reseller) lines only: 8 lines in the file, 10 expected lines missing
Prado — partner (reseller) lines only: 21 lines in the file, 6 expected lines missing
Kidoz — partner (reseller) lines only: 17 lines in the file, 5 expected lines missing
DSail — partner (reseller) lines only: 165 lines in the file

Invalid lines

omgstudios, lion, DIRECT
smaato.com,000000,DIRECT,07bcf65f187117b4
yahoo.com, 58905, RESELLER e1a5b5b6e3255540
lemmatechnologies,1844,RESELLER
gitberry.com, RESELLER, 816110171
gitberry.com, RESELLER, 816110171
Main account -
OB Account:
uis.mobfox.com, 2310, RESELLER 5529a3d1f59865be
Media.net, 8CUGG4P7J, RESELLER - oRTB

Corrected file: best.place app-ads.txt (fixed).

FAQ

Does best.place have an app-ads.txt?

Yes — https://best.place/app-ads.txt has 21,395 lines (checked 23 Oct 2026).

Which ad networks does best.place work with?

Its app-ads.txt lists Google AdMob, Unity Ads, Liftoff Monetize (Vungle), ironSource / LevelPlay, Mintegral, VK Ads (myTarget), Bidease, BIGO Ads, Maticoo (zMaticoo), Yandex Ads, Magnite (Rubicon), Bidmachine and 30 more.

best.place app-ads.txt check

Ad networks in best.place/app-ads.txt

Invalid lines

FAQ

Does best.place have an app-ads.txt?

Which ad networks does best.place work with?

Is the app-ads.txt of best.place correct?

Other checked domains

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