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.

mastinapp.com app-ads.txt check

mastinapp.com is missing out on higher CPMs: its app-ads.txt has 132 invalid lines and lists only 4,157 of the 8,267 lines its 29 ad networks expect (50% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 12,004 lines, 6,209 unique records, 5,400 duplicates, 132 invalid lines, 41 ad networks detected.

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

Google AdMob — accounts pub-4646434874747990, pub-3940256099942544, pub-1067374679252537 and 77 more: 80 lines in the file
Meta Audience Network — accounts 3146899975432739, 471271957490672, 1149223445501693 and 1 more: 4 lines in the file
Smaato — accounts 1100036244, 1100046579, 1100045221 and 18 more: 21 lines in the file
OpenX — accounts 545648953, 541169192, 539872073 and 27 more: 30 lines in the file
InMobi — accounts 57328b4a54ac4bad88737894a9a9e1b9, e3767aca349d44cdb937efcaac9a5911, 6801ebe3b36d4afba25f67b2d0e9d9ed and 16 more: 219 lines in the file, 71 expected lines missing
Xandr (Microsoft) — accounts 9684, 10264, 9982 and 11 more: 14 lines in the file
Amazon Publisher Services — accounts cf78b987-05be-4f10-bde4-2e3308b639ce, d66f8965-e8d8-4296-86b1-fde3ee7c1b74, 8b48e249-e9e6-4a52-8b48-396ea93403e8 and 11 more: 14 lines in the file
Bidmachine — account 113483: 400 lines in the file, 400 expected lines missing
Criteo — accounts B-060278, B-062041, B-056930 and 9 more: 12 lines in the file
Index Exchange — accounts 194273, 186266, 186779 and 22 more: 25 lines in the file
ironSource / LevelPlay — account 316842: 67 lines in the file, 59 expected lines missing
Sovrn — accounts 270680-eb, 267370, 267370-eb and 25 more: 28 lines in the file
Ogury — accounts 870611c7-e67d-4c44-be3e-95c6d4e082d6, 26151523-5d95-4f84-b111-47b596ead91e: 10 lines in the file, 9 expected lines missing
PubMatic — accounts 157562, 157097, 159078 and 40 more: 43 lines in the file
Magnite (Rubicon) — accounts 12556, 18110, 20884 and 30 more: 33 lines in the file
TripleLift — accounts 8916, 8916-EB, 3084 and 9 more: 12 lines in the file
Liftoff Monetize (Vungle) — accounts 5f3d310a8421a5001528b750, 61e14e3a202b9b0017cfa923, 66d6b6896f113e001198b89c: 361 lines in the file, 32 expected lines missing
Yandex Ads — accounts 91473013, 106527656, 65102518: 96 lines in the file, 75 expected lines missing
Mintegral — accounts 31854, 22942, 12361: 400 lines in the file, 71 expected lines missing
Display.io — account 2471: 13 lines in the file, 20 expected lines missing
Maticoo (zMaticoo) — accounts 165f9315dafce7, 118095, 114386 and 4 more: 157 lines in the file, 294 expected lines missing
Verve (PubNative) — accounts 1009333, 1009442, 1009294 and 4 more: 400 lines in the file, 400 expected lines missing
BIGO Ads — accounts 316, 256, 426 and 1 more: 370 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — account 229873: 264 lines in the file, 187 expected lines missing
VK Ads (myTarget) — account 21251895: 108 lines in the file, 67 expected lines missing
BlueSea — account 203846: 12 lines in the file, 26 expected lines missing
AppLovin — accounts ef8699a2fc44fd20a97151a91b577fb8, 72340, 2713cc543ecb0969b83e3fdbf9ff011f and 1 more: 37 lines in the file, 2 expected lines missing
TikTok Ad Network (Pangle) — account 5000646: 1 line in the file
Unity Ads — account 2022807: 65 lines in the file, 96 expected lines missing
Chartboost — partner (reseller) lines only: 400 lines in the file, 180 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 20 lines in the file, 29 expected lines missing
DSP Exchange — partner (reseller) lines only: 393 lines in the file, 168 expected lines missing
Madex — partner (reseller) lines only: 8 lines in the file, 10 expected lines missing
Monetrix — partner (reseller) lines only: 40 lines in the file, 53 expected lines missing
Prado — partner (reseller) lines only: 10 lines in the file, 17 expected lines missing
HyprMX — partner (reseller) lines only: 216 lines in the file, 153 expected lines missing
Start.io — partner (reseller) lines only: 54 lines in the file, 103 expected lines missing
Kidoz — partner (reseller) lines only: 5 lines in the file, 17 expected lines missing
CAS.ai — partner (reseller) lines only: 83 lines in the file, 82 expected lines missing
DSail — partner (reseller) lines only: 83 lines in the file, 82 expected lines missing

Invalid lines

singularads, 984415, RESELLER
tpmn.io391,RESELLER
singularads, 445896, DIRECT
singularads, 445896, RESELLER
trustedstack, TSTKQ5827, RESELLER
singularads, 548745, RESELLER
tv0415
tv0331
tv0302
Branch
branchdiscovery.io, 233807,
rubiconproject.com, 15854, RESELLER 0bfd66d529a55807
Opera
nextsmart
tv0210

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

FAQ

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

Yes — https://mastinapp.com/app-ads.txt has 12,004 lines (checked 19 Oct 2026).

Which ad networks does mastinapp.com work with?

Its app-ads.txt lists Google AdMob, Meta Audience Network, Smaato, OpenX, InMobi, Xandr (Microsoft), Amazon Publisher Services, Bidmachine, Criteo, Index Exchange, ironSource / LevelPlay, Sovrn and 29 more.

mastinapp.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does mastinapp.com work with?

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

Other checked domains

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