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.

ucweb.com app-ads.txt check

ucweb.com is missing out on higher CPMs: its app-ads.txt has 6 invalid lines and lists only 3,898 of the 6,090 lines its 35 ad networks expect (36% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 21 Oct 2026. 5,873 lines, 5,627 unique records, 165 duplicates, 6 invalid lines, 43 ad networks detected.

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

Verve (PubNative) — account 1007097: 400 lines in the file, 400 expected lines missing
Mintegral — accounts 9565, 13313, 6028 and 2 more: 400 lines in the file, 60 expected lines missing
Google AdMob — accounts pub-5445841588219321, pub-9065761893720324, pub-5111137191506013 and 25 more: 28 lines in the file
Magnite (Rubicon) — accounts 19176, 21310, 11784 and 7 more: 10 lines in the file
InMobi — accounts 206332647f214fa3a2d35d2519c0646b, 5992f92bb5a64988b29dbc9fb15b8fc8, f609d555e22a404797eae3c3470481de and 1 more: 231 lines in the file, 44 expected lines missing
Smaato — accounts 1100045468, 1100019902, 1100046499 and 4 more: 7 lines in the file
Xandr (Microsoft) — accounts 7351, 2764, 9684 and 3 more: 6 lines in the file
Chartboost — account 5b5b557d3026ff0c74a9a0b7: 400 lines in the file, 225 expected lines missing
Criteo — accounts 180479, 180031, 181330 and 6 more: 9 lines in the file
MobileFuse — account 2535: 1 line in the file
Display.io — accounts 2088, 194746: 21 lines in the file, 13 expected lines missing
HyprMX — account 16686419780: 204 lines in the file, 166 expected lines missing
ironSource / LevelPlay — accounts 210485, 661675: 92 lines in the file, 35 expected lines missing
PubMatic — accounts 158753, 158060, 157743 and 6 more: 9 lines in the file
OpenX — accounts 540834345, 540659096, 540659099 and 11 more: 14 lines in the file
Ogury — accounts e417793dad0316bb611a1e689d3222d9, a2e4e6585a05aad14ce6f77316b20596: 5 lines in the file, 14 expected lines missing
Liftoff Monetize (Vungle) — accounts 5989f382e34b6cee580022bf, 688b3725c446f77fe6eaaff8, 676405dff3fa5d00114fee22: 365 lines in the file, 28 expected lines missing
TikTok Ad Network (Pangle) — accounts 5031075, 56621: 2 lines in the file
AppLovin — accounts 13a501a4e842b498526dc42f23374935, 609c0bb7b148b2c8b9ea87f3554edad6: 35 lines in the file, 2 expected lines missing
Start.io — accounts 194886369, 116712987, 117514417: 125 lines in the file, 35 expected lines missing
CAS.ai — account babe9c54: 163 lines in the file, 2 expected lines missing
BIGO Ads — account 23171109: 400 lines in the file
Unity Ads — account 8787315: 156 lines in the file, 5 expected lines missing
Yango Ads — account 318904989: 400 lines in the file, 400 expected lines missing
Yandex Ads — account 318904989: 164 lines in the file, 5 expected lines missing
TripleLift — accounts 14594, 14146, 6998: 3 lines in the file
Yahoo — account 60013: 1 line in the file
Sovrn — accounts 323999, 397546, 411915 and 13 more: 16 lines in the file
Maticoo (zMaticoo) — accounts 111555, 104752, 5135063: 276 lines in the file, 171 expected lines missing
Index Exchange — account 215209: 1 line in the file
Amazon Publisher Services — account 5d8ed25e-57cc-441a-b62a-127b34faae4e: 1 line in the file
Bidmachine — account 1469: 400 lines in the file, 400 expected lines missing
BlueSea — accounts 204037, 7138205: 38 lines in the file, 1 expected line missing
Meta Audience Network — accounts 538873886313500, 925717247457302: 2 lines in the file
DT Exchange (Fyber) — account 235949: 400 lines in the file, 40 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 116 lines in the file, 28 expected lines missing
Bidease — partner (reseller) lines only: 38 lines in the file, 11 expected lines missing
DSP Exchange — partner (reseller) lines only: 314 lines in the file, 247 expected lines missing
Madex — partner (reseller) lines only: 4 lines in the file, 14 expected lines missing
Monetrix — partner (reseller) lines only: 59 lines in the file, 34 expected lines missing
Prado — partner (reseller) lines only: 18 lines in the file, 9 expected lines missing
Kidoz — partner (reseller) lines only: 14 lines in the file, 8 expected lines missing
DSail — partner (reseller) lines only: 163 lines in the file, 2 expected lines missing

Invalid lines

sharethrough.com,23830661
smartyads.com,897,fd2bde0ff2e62c5d
singularads,548745,RESELLER
pubmatic.com,156500,RESELLER,5d62403b186f2aceopenx.com,540709535,RESELLER,6a698e2ec38604c6
lemmatechnologies,1844,RESELLER
anzu,6926f89af6ae04ecf7a64747,RESELLER

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

FAQ

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

Yes — https://ucweb.com/app-ads.txt has 5,873 lines (checked 21 Oct 2026).

Which ad networks does ucweb.com work with?

Its app-ads.txt lists Verve (PubNative), Mintegral, Google AdMob, Magnite (Rubicon), InMobi, Smaato, Xandr (Microsoft), Chartboost, Criteo, MobileFuse, Display.io, HyprMX and 31 more.

ucweb.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does ucweb.com work with?

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

Other checked domains

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