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.

harmonybit.com app-ads.txt check

harmonybit.com is missing out on higher CPMs: its app-ads.txt has 11 invalid lines and lists only 1,085 of the 3,498 lines its 22 ad networks expect (69% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 2,339 lines, 1,853 unique records, 475 duplicates, 11 invalid lines, 33 ad networks detected.

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

AppLovin — account 48fffa2d509a233be05e7ccbadd53811: 12 lines in the file, 24 expected lines missing
Chartboost — account 57ff726f04b016161464a83a: 209 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — accounts 118378, 212215: 84 lines in the file, 368 expected lines missing
Google AdMob — accounts pub-2626278881217468, pub-7079691902491759: 2 lines in the file
InMobi — accounts 1a698dd2011a4b409c9bd8f6e06266b0, 59c7922793a3477b9419f0854d1da7e9, 950da4a32b764ec7be601701546bc784: 87 lines in the file, 187 expected lines missing
ironSource / LevelPlay — account 178599: 39 lines in the file, 87 expected lines missing
Unity Ads — account 1063229: 35 lines in the file, 126 expected lines missing
Vungle — account 57d671c6758a635206000019: 99 lines in the file, 261 expected lines missing
Yahoo — accounts 58701, 29225, 58993: 3 lines in the file
Smaato — accounts 1100046656, 1100028365, 1100052545 and 1 more: 4 lines in the file
Index Exchange — account 192104: 1 line in the file
PubMatic — accounts 159527, 160565, 159078 and 3 more: 6 lines in the file
Xandr (Microsoft) — accounts 9914, 12061, 12501 and 3 more: 6 lines in the file
Sovrn — account 297837: 1 line in the file
TikTok Ad Network (Pangle) — account 9898: 1 line in the file
HyprMX — account 25320493868: 80 lines in the file, 290 expected lines missing
Mintegral — account 9298: 400 lines in the file, 400 expected lines missing
Amazon Publisher Services — accounts 6900db45-7b4d-405c-a843-76bebbf1d7db, ae1f4fa9-4c21-43d6-ab37-fef93b9959ee: 2 lines in the file
Criteo — accounts 180031, 181330, 180034 and 5 more: 8 lines in the file
OpenX — accounts 540659096, 540659099, 540310752: 3 lines in the file
Magnite (Rubicon) — accounts 11784, 19652: 2 lines in the file
TripleLift — account 13041: 1 line in the file
Yandex Ads — partner (reseller) lines only: 23 lines in the file, 145 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 76 lines in the file, 68 expected lines missing
BIGO Ads — partner (reseller) lines only: 111 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 269 lines in the file, 292 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 44 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 127 lines in the file, 400 expected lines missing
Start.io — partner (reseller) lines only: 13 lines in the file, 144 expected lines missing
CAS.ai — partner (reseller) lines only: 18 lines in the file, 147 expected lines missing
DSail — partner (reseller) lines only: 18 lines in the file, 147 expected lines missing
Bidmachine — partner (reseller) lines only: 146 lines in the file, 400 expected lines missing

Invalid lines

5d62403b186f2ace rubiconproject.com,
23822, RESELLER,0bfd66d529a55807
outbrain.com, 002d7f7ba0bd74452f2b155d0dfb5cd6c8, RESELLER appnexus.com, 12501,RESELLER, f5ab79cb980f11d1
video. unrulymedia.com, 188404962, RESELLER
rhebus. works, 7597018658, RESELLER
rubiconproject .com, 24600,RESELLER, 0bfd66d529a55807
inmobi.com, 3a4f7da341dd490cbb7dde02b126275e, RESELLER,83e75a7ae333ca9d triplelift.com, 12240,RESELLER,6c33edb13117fd86
agon. mobi, 686, RESELLER
adform.com, 2742, RESELLER indexexchange.com, 194730,RESELLER
themediagrid.com, YUPM3V,RESELLER,35d5010d7789b49d xandr.com,13167,RESELLER
conversantmedia.com, 40881,RESELLER,03113cd04947736d smaato.com, 1100004890,RESELLER video.unrulymedia.com, 564934834,RESELLER

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

FAQ

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

Yes — https://harmonybit.com/app-ads.txt has 2,339 lines (checked 19 Oct 2026).

Which ad networks does harmonybit.com work with?

Its app-ads.txt lists AppLovin, Chartboost, DT Exchange (Fyber), Google AdMob, InMobi, ironSource / LevelPlay, Unity Ads, Vungle, Yahoo, Smaato, Index Exchange, PubMatic and 21 more.

harmonybit.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does harmonybit.com work with?

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

Other checked domains

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