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.

mczapps.info app-ads.txt check

mczapps.info is missing out on higher CPMs: its app-ads.txt has 10 invalid lines and lists only 6,802 of the 8,260 lines its 26 ad networks expect (18% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 10,203 lines, 5,967 unique records, 4,217 duplicates, 10 invalid lines, 39 ad networks detected.

Ad networks in mczapps.info/app-ads.txt

Chartboost — account 64805d7e340887be79de17af: 400 lines in the file, 1 expected line missing
Vungle — accounts 647deb456149810011be5192, A9_UAM: 323 lines in the file, 38 expected lines missing
Meta Audience Network — accounts 944812826610588, 803069261354437, 687371629822287 and 4 more: 7 lines in the file
Google AdMob — accounts pub-6758637865839172, pub-7279990999620104, pub-6827636416768041: 3 lines in the file
Mintegral — account 38021: 400 lines in the file, 178 expected lines missing
ironSource / LevelPlay — account 474407: 98 lines in the file, 28 expected lines missing
DT Exchange (Fyber) — account 221565: 389 lines in the file, 62 expected lines missing
AppLovin — account 115851978135918c91ac6648aabfb8c8: 34 lines in the file, 2 expected lines missing
InMobi — accounts 109a913d3c3948dd9d3856cae07b6c6f, cb6a6239dfec478f818c1ffca00ca440, ddb41d8a9f434a918d05a0fc9999d9f9: 182 lines in the file, 92 expected lines missing
Unity Ads — accounts 4767114, 4767094: 117 lines in the file, 45 expected lines missing
TikTok Ad Network (Pangle) — account 5010710: 1 line in the file
Magnite (Rubicon) — accounts 26442, 26440, 27178 and 4 more: 7 lines in the file
PubMatic — accounts 166766, 95054: 2 lines in the file
Criteo — account SWH94X: 1 line in the file
Yandex Ads — account 107698814: 150 lines in the file, 19 expected lines missing
Bidmachine — account 458: 400 lines in the file, 400 expected lines missing
Smaato — accounts 1100057626, 1100057577, 1100058656 and 1 more: 4 lines in the file
MobileFuse — account 4551: 1 line in the file
VK Ads (myTarget) — account 22134532: 141 lines in the file, 34 expected lines missing
Verve (PubNative) — accounts 1009828, 1009827, 1009806 and 1 more: 400 lines in the file, 24 expected lines missing
Amazon Publisher Services — account ae1f4fa9-4c21-43d6-ab37-fef93b9959ee: 1 line in the file
BIGO Ads — accounts 1116228, 23171041: 400 lines in the file, 32 expected lines missing
Sovrn — accounts 411915, 563477, 583061 and 1 more: 4 lines in the file
Xandr (Microsoft) — account 15686: 1 line in the file
OpenX — accounts 563905670, 564972066: 2 lines in the file
TripleLift — account 6998: 1 line in the file
Bidease — partner (reseller) lines only: 43 lines in the file, 6 expected lines missing
BlueSea — partner (reseller) lines only: 22 lines in the file, 15 expected lines missing
Display.io — partner (reseller) lines only: 15 lines in the file, 17 expected lines missing
DSP Exchange — partner (reseller) lines only: 392 lines in the file, 169 expected lines missing
Madex — partner (reseller) lines only: 6 lines in the file, 12 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 267 lines in the file, 177 expected lines missing
Monetrix — partner (reseller) lines only: 58 lines in the file, 35 expected lines missing
Prado — partner (reseller) lines only: 16 lines in the file, 11 expected lines missing
HyprMX — partner (reseller) lines only: 289 lines in the file, 80 expected lines missing
Start.io — partner (reseller) lines only: 120 lines in the file, 37 expected lines missing
Kidoz — partner (reseller) lines only: 11 lines in the file, 11 expected lines missing
CAS.ai — partner (reseller) lines only: 147 lines in the file, 18 expected lines missing
DSail — partner (reseller) lines only: 147 lines in the file, 18 expected lines missing

Invalid lines

facebook.com, 222052887465240 DIRECT, c3e20eee3f780d68
facebook.com, 944812826610588 DIRECT, c3e20eee3f780d68
joyteractive.com mobilefuse.com, 4551, DIRECT, 71e88b065d69c021
conversantmedia.com, 41896, RESELLER 03113cd04947736d
e-planning.net, 2f3a04630ba9ba3f, RESELLER, RESELLER, c1ba615865ed87b2
98c21ef9a666c68b
sharethrough.com.4024,RESELLER,d53b998a7bd4ecd2
conversantmedia.com, 101157, RESELLER, 03113cd04947736d (edited)
consumable.com, 2001656, RESELLER, aefcd3d2f45b5070 5K
anzu.io, 6a2a775b38d14281b41b2e6b, RESELLER, 1c1b7acf4992136c —$1000

Corrected file: mczapps.info app-ads.txt (fixed).

FAQ

Does mczapps.info have an app-ads.txt?

Yes — https://mczapps.info/app-ads.txt has 10,203 lines (checked 19 Oct 2026).

Which ad networks does mczapps.info work with?

Its app-ads.txt lists Chartboost, Vungle, Meta Audience Network, Google AdMob, Mintegral, ironSource / LevelPlay, DT Exchange (Fyber), AppLovin, InMobi, Unity Ads, TikTok Ad Network (Pangle), Magnite (Rubicon) and 27 more.

mczapps.info app-ads.txt check

Ad networks in mczapps.info/app-ads.txt

Invalid lines

FAQ

Does mczapps.info have an app-ads.txt?

Which ad networks does mczapps.info work with?

Is the app-ads.txt of mczapps.info correct?

Other checked domains

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