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.

truecaller.com app-ads.txt check

truecaller.com is missing out on higher CPMs: its app-ads.txt has 8 invalid lines and lists only 3,227 of the 3,768 lines its 26 ad networks expect (14% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 22 Oct 2026. 7,654 lines, 6,900 unique records, 745 duplicates, 8 invalid lines, 41 ad networks detected.

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

Google AdMob — account pub-1495661970115612: 1 line in the file
PubMatic — accounts 158601, 160848, 161453 and 7 more: 10 lines in the file
Smaato — accounts 1100056238, 1100056265, 1100058868 and 1 more: 4 lines in the file
Meta Audience Network — account 1918285178395333: 1 line in the file
Index Exchange — accounts 188892, 190906: 2 lines in the file
InMobi — accounts 8c07ca8b544745b0abe6fb106647f5e8, 0b08cc5e036b461cb1fd90bcfd850483, edd282ac8f29464792bf2b7f3df2f9df and 1 more: 225 lines in the file, 50 expected lines missing
Criteo — accounts B-062234, B-062954, B-068838 and 2 more: 5 lines in the file
Verve (PubNative) — accounts 1007868, 1008005, 1008061 and 1 more: 400 lines in the file, 7 expected lines missing
OpenX — accounts 545690269, 540857594, 559285726 and 2 more: 5 lines in the file
Yahoo — accounts 57872, 59405, 60013: 3 lines in the file
BIGO Ads — account 140: 400 lines in the file, 217 expected lines missing
TripleLift — accounts 11742, 12913, 8446: 3 lines in the file
Liftoff Monetize (Vungle) — account 561e8d946b8d90f61a001514: 388 lines in the file, 3 expected lines missing
Xandr (Microsoft) — accounts 11879, 12366, 14416: 3 lines in the file
Magnite (Rubicon) — accounts 16824, 24872, 24874 and 7 more: 10 lines in the file
Sovrn — accounts 244287, 467506, 583061: 3 lines in the file
Maticoo (zMaticoo) — account 114933: 247 lines in the file, 198 expected lines missing
BlueSea — account 203728: 36 lines in the file, 2 expected lines missing
Start.io — account 176011756: 113 lines in the file, 45 expected lines missing
Amazon Publisher Services — account 5c6c2460-56d7-4672-8279-ee278abbaa10: 1 line in the file
Unity Ads — accounts 5184700, 8910685: 157 lines in the file, 5 expected lines missing
Display.io — accounts 165035, 2480: 27 lines in the file, 7 expected lines missing
DT Exchange (Fyber) — accounts 226826, 234004: 400 lines in the file, 1 expected line missing
CAS.ai — account 282be28d: 134 lines in the file, 31 expected lines missing
Mintegral — account 61078: 400 lines in the file, 43 expected lines missing
Chartboost — account 6a587a8e6ec91335d726aed9: 400 lines in the file, 6 expected lines missing
AppLovin — partner (reseller) lines only: 30 lines in the file, 5 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 116 lines in the file, 9 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: 105 lines in the file, 39 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 39 lines in the file, 10 expected lines missing
DSP Exchange — partner (reseller) lines only: 362 lines in the file, 199 expected lines missing
Madex — partner (reseller) lines only: 7 lines in the file, 11 expected lines missing
Monetrix — partner (reseller) lines only: 55 lines in the file, 38 expected lines missing
Prado — partner (reseller) lines only: 19 lines in the file, 8 expected lines missing
Ogury — partner (reseller) lines only: 9 lines in the file, 8 expected lines missing
HyprMX — partner (reseller) lines only: 298 lines in the file, 71 expected lines missing
Kidoz — partner (reseller) lines only: 15 lines in the file, 7 expected lines missing
DSail — partner (reseller) lines only: 134 lines in the file, 31 expected lines missing
Bidmachine — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing

Invalid lines

appnexus.com, 12501, RESELLER,f 5ab79cb980f11d1
videoheroes.tv, ,RESELLER, 064bc410192443d8
keenkale, 94044, RESELLER, 6c1c00b269ccdfa4
Beapup, 658874, RESELLER
eliteAppgrade, 514554, RESELLER
admanmedia.com, XXX, RESELLER
singularads, 548745, reseller,
rubiconproject, 28191, RESELLER, 0bfd66d529a55807

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

FAQ

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

Yes — https://truecaller.com/app-ads.txt has 7,654 lines (checked 22 Oct 2026).

Which ad networks does truecaller.com work with?

Its app-ads.txt lists Google AdMob, PubMatic, Smaato, Meta Audience Network, Index Exchange, InMobi, Criteo, Verve (PubNative), OpenX, Yahoo, BIGO Ads, TripleLift and 29 more.

truecaller.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does truecaller.com work with?

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

Other checked domains

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