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.

ieltspracticeonline.com app-ads.txt check

ieltspracticeonline.com is missing out on higher CPMs: its app-ads.txt lists only 15 of the 1,341 lines its 8 ad networks expect (99% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 20 Oct 2026. 75 lines, 65 unique records, 2 duplicates, 0 invalid lines, 11 ad networks detected.

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

Google AdMob — accounts pub-7122992364980774, pub-5717092533913515, pub-1096717180489477: 3 lines in the file
Amazon Publisher Services — account 6900db45-7b4d-405c-a843-76bebbf1d7db: 1 line in the file
Verve (PubNative) — accounts 1007303, 1007311: 6 lines in the file, 400 expected lines missing
PubMatic — account 157904: 1 line in the file
TripleLift — accounts 913, 913-EB: 2 lines in the file
OpenX — account 538929384: 1 line in the file
Magnite (Rubicon) — account 17346: 1 line in the file
Smaato — accounts 1100041070, 1100033996: 2 lines in the file
Mintegral — partner (reseller) lines only: 11 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 21 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 19 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://ieltspracticeonline.com/app-ads.txt has 75 lines (checked 20 Oct 2026).

Which ad networks does ieltspracticeonline.com work with?

Its app-ads.txt lists Google AdMob, Amazon Publisher Services, Verve (PubNative), PubMatic, TripleLift, OpenX, Magnite (Rubicon), Smaato, Mintegral, Yango Ads, DSP Exchange.

ieltspracticeonline.com app-ads.txt check

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

FAQ

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

Which ad networks does ieltspracticeonline.com work with?

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

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