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.

nick.de app-ads.txt check

nick.de is missing out on higher CPMs: its app-ads.txt has 10 invalid lines and lists only 236 of the 1,971 lines its 14 ad networks expect (88% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 1,994 lines, 1,300 unique records, 277 duplicates, 10 invalid lines, 25 ad networks detected.

Ad networks in nick.de/app-ads.txt

Google AdMob — accounts pub-1991679624331369, pub-7082778644367489, pub-4576182554845894 and 66 more: 69 lines in the file
Index Exchange — accounts 184819, 183422, 181201 and 23 more: 26 lines in the file
OpenX — accounts 539022633, 539948074, 540038340 and 22 more: 25 lines in the file
PubMatic — accounts 157181, 157184, 157916 and 38 more: 41 lines in the file
Magnite (Rubicon) — accounts 17568, 10764, 19248 and 24 more: 27 lines in the file
TripleLift — accounts 6897, 6897-EB, 3569 and 4 more: 7 lines in the file
Xandr (Microsoft) — accounts 3121, 1024, 7823 and 18 more: 21 lines in the file
Sovrn — accounts 258040, 272455, 272455-eb and 5 more: 8 lines in the file
Amazon Publisher Services — accounts 3135, 3800, bfb7e787-3e90-4273-8943-7a6a65bd96e8 and 7 more: 10 lines in the file
Criteo — accounts 170824, B-068556, B-059711: 3 lines in the file
DT Exchange (Fyber) — account 731e3f6fad5e8b79297ef43f30beeab9: 15 lines in the file, 400 expected lines missing
Smaato — accounts 1100044045, 1100037086, 1100053125 and 3 more: 6 lines in the file
Verve (PubNative) — account 1006576: 32 lines in the file, 400 expected lines missing
Yahoo — accounts 55104, 57695, 58578 and 10 more: 13 lines in the file
Mintegral — partner (reseller) lines only: 51 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 15 lines in the file, 375 expected lines missing
Chartboost — partner (reseller) lines only: 34 lines in the file, 400 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 11 lines in the file, 133 expected lines missing
BIGO Ads — partner (reseller) lines only: 32 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 81 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 44 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 22 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 16 lines in the file, 353 expected lines missing
Start.io — partner (reseller) lines only: 10 lines in the file, 147 expected lines missing
Bidmachine — partner (reseller) lines only: 53 lines in the file, 400 expected lines missing

Invalid lines

Playground XYZ,
smartadserver.com, undefined, DIRECT
*.go.sonobi.com, 1397c6e185, DIRECT
rhythmone.com, 1059622079, RESEL.comcontextweb.com, 560606, RESELLER
Pluto - Last update 01/23/2023
EMXDGT.com,994,DIRECT,1e1d41537f7cad7f � ViacomCBS A9/TAM
EMXDGT.com,1010,DIRECT,1e1d41537f7cad7f � ViacomCBS A9 App/TAM
EMXDGT.com,1909,DIRECT,1e1d41537f7cad7f � ViacomCBS Publica CTV
EMXDGT.com,2135,DIRECT,1e1d41537f7cad7f � ViacomCBS Google OB
madhive.com, 0, DIRECT, b16d6d9e0982efe4

Corrected file: nick.de app-ads.txt (fixed).

FAQ

Does nick.de have an app-ads.txt?

Yes — https://nick.de/app-ads.txt has 1,994 lines (checked 19 Oct 2026).

Which ad networks does nick.de work with?

Its app-ads.txt lists Google AdMob, Index Exchange, OpenX, PubMatic, Magnite (Rubicon), TripleLift, Xandr (Microsoft), Sovrn, Amazon Publisher Services, Criteo, DT Exchange (Fyber), Smaato and 13 more.

nick.de app-ads.txt check

Ad networks in nick.de/app-ads.txt

Invalid lines

FAQ

Does nick.de have an app-ads.txt?

Which ad networks does nick.de work with?

Is the app-ads.txt of nick.de correct?

Other checked domains

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