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.

elpais.com app-ads.txt check

elpais.com is missing out on higher CPMs: its app-ads.txt has 3 invalid lines and lists only 263 of the 799 lines its 16 ad networks expect (67% missing). Unlisted sellers can't be verified, so buyers bid less or skip the inventory.

Checked 19 Oct 2026. 2,762 lines, 2,606 unique records, 120 duplicates, 3 invalid lines, 32 ad networks detected.

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

Xandr (Microsoft) — accounts 10535, 2579, 11075 and 16 more: 19 lines in the file
Amazon Publisher Services — accounts 3226, 5107, 5123 and 13 more: 16 lines in the file
Criteo — accounts B-058521, B-062612, B-060927 and 2 more: 5 lines in the file
Google AdMob — accounts pub-8750086020675820, pub-1305372857617183, pub-1309378188566785 and 47 more: 50 lines in the file
Index Exchange — accounts 185132, 185484, 184999 and 13 more: 16 lines in the file
PubMatic — accounts 157987, 161200, 161830 and 23 more: 26 lines in the file
Magnite (Rubicon) — accounts 9778, 23404, 17214 and 19 more: 22 lines in the file
TripleLift — accounts 13044, 13044-EB, 7057 and 7 more: 10 lines in the file
Sovrn — accounts 230102, 230102-eb, 408376 and 32 more: 35 lines in the file
OpenX — accounts 545708355, 558218698, 537120530 and 15 more: 18 lines in the file
DSail — accounts mgid-ds-772581-09, mgid-ds-772581-02: 27 lines in the file, 140 expected lines missing
InMobi — accounts 3068e448cc0543aaa44220e2fa2b0bad, 14bdd7c7e8bd4e239c497b07e1c7f629, 64390d9c0d0541bc9b06ab42a124b396 and 1 more: 33 lines in the file, 242 expected lines missing
Smaato — accounts 1100054930, 1100000579, 1100047290 and 1 more: 4 lines in the file
Yahoo — accounts 55248, 58578: 2 lines in the file
Yandex Ads — accounts 91473013, 106527656: 28 lines in the file, 142 expected lines missing
Ogury — account 58c5c0a0-35a2-4926-83f8-64073963ae02: 6 lines in the file, 12 expected lines missing
Mintegral — partner (reseller) lines only: 142 lines in the file, 400 expected lines missing
Unity Ads — partner (reseller) lines only: 17 lines in the file, 143 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 18 lines in the file, 107 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 61 lines in the file, 329 expected lines missing
Chartboost — partner (reseller) lines only: 101 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 43 lines in the file, 400 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 19 lines in the file, 125 expected lines missing
BIGO Ads — partner (reseller) lines only: 114 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 254 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 131 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 55 lines in the file, 389 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 89 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 59 lines in the file, 310 expected lines missing
Start.io — partner (reseller) lines only: 17 lines in the file, 140 expected lines missing
CAS.ai — partner (reseller) lines only: 25 lines in the file, 140 expected lines missing
Bidmachine — partner (reseller) lines only: 211 lines in the file, 400 expected lines missing

Invalid lines

bizzclick, 898, DIRECT, 7e936b1feafdaa61
chocolateplatform.com, Â 15364, DIRECT, 49a66ce31a704197
vdopia.com, Â 15364, DIRECT, 49a66ce31a704197

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

FAQ

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

Yes — https://elpais.com/app-ads.txt has 2,762 lines (checked 19 Oct 2026).

Which ad networks does elpais.com work with?

Its app-ads.txt lists Xandr (Microsoft), Amazon Publisher Services, Criteo, Google AdMob, Index Exchange, PubMatic, Magnite (Rubicon), TripleLift, Sovrn, OpenX, DSail, InMobi and 20 more.

elpais.com app-ads.txt check

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

Invalid lines

FAQ

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

Which ad networks does elpais.com work with?

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

Other checked domains

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