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.

harbormillsoftware.com app-ads.txt check

harbormillsoftware.com is missing out on higher CPMs: its app-ads.txt has 2 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 19 Oct 2026. 15,508 lines, 8,651 unique records, 6,685 duplicates, 2 invalid lines, 41 ad networks detected.

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

InMobi — accounts cb6a6239dfec478f818c1ffca00ca440, 8553511ff9e24ce2b1f5d98addcc3340, be453901fc2a4a178240f2ef402abf66 and 4 more: 269 lines in the file, 9 expected lines missing
Google AdMob — accounts pub-2233829666677759, pub-2085247160344713, pub-5917327808416348 and 9 more: 12 lines in the file
Xandr (Microsoft) — accounts 16912, 15686, 9726 and 2 more: 5 lines in the file
Magnite (Rubicon) — accounts 25512, 17280, 25696 and 3 more: 6 lines in the file
Sovrn — accounts 555137, 555140, 613988 and 10 more: 13 lines in the file
PubMatic — accounts 163009, 157743, 161838 and 8 more: 11 lines in the file
OpenX — accounts 566756867, 564020680, 563905670 and 3 more: 6 lines in the file
TripleLift — accounts 9636, 14873, 8614 and 7 more: 10 lines in the file
Index Exchange — accounts 213773, 199012, 192585 and 2 more: 5 lines in the file
Smaato — accounts 1100049696, 1100048585, 1100054974 and 4 more: 7 lines in the file
Amazon Publisher Services — accounts b1598423-cb0c-4a5e-bafb-6ab071a3e8b8, 42df5c79-9a6a-4118-b46f-dd311cf16fb8: 2 lines in the file
MobileFuse — account 4077: 1 line in the file
AppLovin — accounts 73b7784722bfc9231bdcca4634c3cab5, 7df08c0ee669e88fe57032d9477ad2c8, 5a6f52fb6127a229fda933426ee91972 and 1080 more: 400 lines in the file
Criteo — accounts B-061015, B-066465, B-063382: 3 lines in the file
Bidmachine — accounts 328, 328-1: 400 lines in the file, 96 expected lines missing
Maticoo (zMaticoo) — account 5135063: 312 lines in the file, 133 expected lines missing
BlueSea — account 204037: 27 lines in the file, 11 expected lines missing
Start.io — accounts 179510621, 117514417, 163241862 and 1 more: 154 lines in the file, 7 expected lines missing
CAS.ai — account babe9c54: 163 lines in the file, 2 expected lines missing
Verve (PubNative) — accounts 1016935, 1009277, 1008506 and 2 more: 400 lines in the file, 67 expected lines missing
BIGO Ads — accounts 1481, jq327s9644: 400 lines in the file, 6 expected lines missing
Monetrix — account 174: 71 lines in the file, 23 expected lines missing
Chartboost — account 5dc49a81c4d80c0a35b695de: 400 lines in the file, 1 expected line missing
DT Exchange (Fyber) — account 209032: 400 lines in the file
Ogury — accounts 5bbe7af9-d51f-499e-a804-db54798d96f4, 6a67ff65d2292274271a0ae3858d7916: 12 lines in the file, 7 expected lines missing
HyprMX — account 23322716087: 367 lines in the file, 3 expected lines missing
ironSource / LevelPlay — account 232331: 125 lines in the file, 1 expected line missing
Liftoff Monetize (Vungle) — account 5f064bf93191d60018f0fd5a: 391 lines in the file
Mintegral — account 14228: 400 lines in the file
TikTok Ad Network (Pangle) — account 4481: 1 line in the file
Unity Ads — accounts 1679789, 13228: 162 lines in the file
Yango Ads — account 330357335: 400 lines in the file, 400 expected lines missing
Yandex Ads — account 330357335: 169 lines in the file
VK Ads (myTarget) — partner (reseller) lines only: 100 lines in the file, 44 expected lines missing
Bidease — partner (reseller) lines only: 43 lines in the file, 6 expected lines missing
Display.io — partner (reseller) lines only: 12 lines in the file, 20 expected lines missing
DSP Exchange — partner (reseller) lines only: 400 lines in the file, 107 expected lines missing
Madex — partner (reseller) lines only: 8 lines in the file, 10 expected lines missing
Prado — partner (reseller) lines only: 21 lines in the file, 6 expected lines missing
Kidoz — partner (reseller) lines only: 17 lines in the file, 5 expected lines missing
DSail — partner (reseller) lines only: 163 lines in the file, 2 expected lines missing

Invalid lines

gitberry.com, RESELLER, 816110171
gitberry.com, RESELLER, 816110171

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

FAQ

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

Yes — https://harbormillsoftware.com/app-ads.txt has 15,508 lines (checked 19 Oct 2026).

Which ad networks does harbormillsoftware.com work with?

Its app-ads.txt lists InMobi, Google AdMob, Xandr (Microsoft), Magnite (Rubicon), Sovrn, PubMatic, OpenX, TripleLift, Index Exchange, Smaato, Amazon Publisher Services, MobileFuse and 29 more.

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