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.

focus.de app-ads.txt check

focus.de is missing out on higher CPMs: its app-ads.txt lists only 44 of the 57 lines its 11 ad networks expect (23% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 20 Oct 2026. 568 lines, 355 unique records, 71 duplicates, 0 invalid lines, 18 ad networks detected.

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

Google AdMob — accounts pub-8110506465392788, pub-4232809290536627, pub-4296839430913713 and 1 more: 4 lines in the file
Amazon Publisher Services — accounts 6e4aeb14-d5da-4859-a645-c4061951642c, 3690: 2 lines in the file
Criteo — account B-060960: 1 line in the file
Index Exchange — accounts 189899, 192268, 194645 and 3 more: 6 lines in the file
Magnite (Rubicon) — accounts 23598, 22368, 22370 and 5 more: 8 lines in the file
PubMatic — accounts 159109, 157420, 160593 and 5 more: 8 lines in the file
TripleLift — accounts 4185, 4185-EB, 14423-EB and 4 more: 7 lines in the file
OpenX — accounts 540063070, 541036055, 564240988: 3 lines in the file
Xandr (Microsoft) — accounts 16381, 3927: 2 lines in the file
Sovrn — account 397546: 1 line in the file
Ogury — account ebbd8a99-dd9f-4844-b949-6d136b623821: 5 lines in the file, 13 expected lines missing
Mintegral — partner (reseller) lines only: 22 lines in the file, 400 expected lines missing
BIGO Ads — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 36 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 24 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 14 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 10 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 39 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://focus.de/app-ads.txt has 568 lines (checked 20 Oct 2026).

Which ad networks does focus.de work with?

Its app-ads.txt lists Google AdMob, Amazon Publisher Services, Criteo, Index Exchange, Magnite (Rubicon), PubMatic, TripleLift, OpenX, Xandr (Microsoft), Sovrn, Ogury, Mintegral and 6 more.

focus.de app-ads.txt check

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

FAQ

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

Which ad networks does focus.de work with?

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

Other checked domains

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