iOS · ON 3 MEDIA, LLP

On3 App

Developer URL: https://www.on3.com/apps/on3/
app-ads.txt: https://www.on3.com/app-ads.txt · 200
Checked: Oct 7, 2026

81/100

598 lines · 443 verified against sellers.json

Findings

Each finding lists the exact lines involved. Findings are automated observations of public files as of Oct 7, 2026. They describe file contents, not the intent or conduct of any company.

warning

DIRECT lines inconsistent with public data

14 −9 pts

The ads.txt specification defines DIRECT as an account the publisher directly controls. For these lines, either the ad system's own sellers.json lists the account as INTERMEDIARY, or the same account is marked DIRECT in the files of 3 or more unrelated companies. Either way, the public data does not support the DIRECT label. Buyers that use DIRECT labels in supply-path decisions may treat these lines differently.

How to fixUse DIRECT only for accounts your company controls. Confirm with each partner whether the account is yours; if it isn't, the specification calls for RESELLER.

Evidence (14)

line 20     openx.com, 563905670, DIRECT, 6a698e2ec38604c6
             → observed: the same account is marked DIRECT by 52 different companies
line 60     gannett.com, 22597404845, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 67     nativo.com, 5969, DIRECT, 59521ca7cc5e9fee
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: EX.CO  domain in sellers.json: ex.co
line 410    criteo.com, B-068503, DIRECT, 9fac4a4a87c2a44f
             → observed: the same account is marked DIRECT by 5 different companies
line 411    themediagrid.com, N71MIF, DIRECT, 35d5010d7789b49d
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 5 different companies  name in sellers.json: WUNDERKIND CORPORATION  domain in sellers.json: wunderkind.co
line 413    Media.net, 8CU3BYI96, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 417    pubmatic.com, 168198, DIRECT, 5d62403b186f2ace
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: On3 Media - OB (via EB)  domain in sellers.json: google.com
line 426    rubiconproject.com, 23944, DIRECT, 0bfd66d529a55807
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: Google  domain in sellers.json: google.com
line 527    aps.amazon.com, 48266a61-b3d9-4cb7-b172-553abc6a42a4, DIRECT
             → observed: the same account is marked DIRECT by 11 different companies  name in sellers.json: Online Media Solutions Ltd  domain in sellers.json: onlinemediasolutions.com
line 541    video.unrulymedia.com, 2439829435, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 12 different companies  name in sellers.json: 33Across Inc.  domain in sellers.json: 33across.com
line 639    pubmatic.com, 168198, DIRECT, 5d62403b186f2ace
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: On3 Media - OB (via EB)  domain in sellers.json: google.com
line 642    rubiconproject.com, 22884, DIRECT, 0bfd66d529a55807
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 42 different companies  name in sellers.json: Google  domain in sellers.json: google.com
line 665    onetag.com, 81ce99c4f7b6c9c, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: On3  domain in sellers.json: on3.com
line 675    media.net, 8CAH8HI6Y, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: On3 Media, LLP (via OB)  domain in sellers.json: google.com

warning

Seller IDs not listed in the ad system's sellers.json

28 −5 pts

The ad system's current sellers.json doesn't list these accounts, so buyers that validate the chain can't match them. Common causes are closed accounts or former partners.

How to fixAsk each partner whether the account is still active and request their current lines; remove lines for closed accounts.

Evidence (25 of 28)

line 116    google.com, pub-8820362605711196, RESELLER, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 122    rubiconproject.com, 17814, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 131    google.com, pub-3689904677185774, RESELLER, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 146    rubiconproject.com, 17346, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 148    smaato.com, 1100033996, RESELLER
             → sellers_json: https://smaato.com/sellers.json
line 150    video.unrulymedia.com, 1149317856, RESELLER
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 151    yieldmo.com, 2150737881135219824, RESELLER
             → sellers_json: https://yieldmo.com/sellers.json
line 164    video.unrulymedia.com, 2564526802, RESELLER, 98c21ef9a666c68b
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 224    smartadserver.com, 2441, RESELLER, 060d053dcf45cbf3
             → sellers_json: https://smartadserver.com/sellers.json
line 237    rubiconproject.com, 13918, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 281    improvedigital.com,2050,RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 285    risecodes.com,65df686e919eee00018a2822,DIRECT
             → sellers_json: https://risecodes.com/sellers.json
line 293    connectad.io,455,RESELLER,85ac85a30c93b3e5
             → sellers_json: https://connectad.io/sellers.json
line 296    opera.com,pub12058951686464,RESELLER,55a0c5fd61378de3
             → sellers_json: https://opera.com/sellers.json
line 345    google.com, pub-8622186303703569, RESELLER, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 349    The-ozone-project.com, OZONEJWP0001, RESELLER
             → sellers_json: https://the-ozone-project.com/sellers.json
line 384    xandr.com, 1405, RESELLER
             → sellers_json: https://xandr.com/sellers.json
line 391    themediagrid.com, DR5ZOY, DIRECT, 35d5010d7789b49d
             → sellers_json: https://themediagrid.com/sellers.json
line 396    onetag.com, 7ac2dc69493a27c, RESELLER
             → sellers_json: https://onetag.com/sellers.json
line 398    rubiconproject.com, 12250, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 399    xandr.com, 12564, RESELLER, f5ab79cb980f11d1
             → sellers_json: https://xandr.com/sellers.json
line 413    Media.net, 8CU3BYI96, DIRECT
             → sellers_json: https://media.net/sellers.json
line 502    video.unrulymedia.com, 8724880470884007731, DIRECT
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 531    rubiconproject.com, 10968, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 546    lijit.com, 370022-eb, DIRECT, fafdf38b16bf6b2b #SOVRN
             → sellers_json: https://lijit.com/sellers.json

warning

Lines for ad system domains that don't resolve

3 −1 pts

These ad system domains don't resolve (the domain may be retired, merged or misspelled). The lines can't be validated, and if the domain is registered again, its new holder would appear authorized.

How to fixRemove these lines. If the domain is registered again, its new holder would appear authorized by your file.

Evidence (3)

line 133    districtm.io, 100127, RESELLER
             → ad_system: districtm.io
line 199    districtm.io, 100962, RESELLER, 3fd707be9c4527c3
             → ad_system: districtm.io
line 265    districtm.io,100962,RESELLER,3fd707be9c4527c3
             → ad_system: districtm.io

warning

Malformed lines

1 −1 pts

Lines that buyers' crawlers will ignore.

How to fixFix the format: <ad system domain>, <seller id>, DIRECT|RESELLER[, <cert authority id>].

Evidence (1)

line 300    inmobi.com,,DIRECT,83e75a7ae333ca9d
             → reason: empty seller id

info

DIRECT accounts registered to another domain

5 −2 pts

Allowed when the domain belongs to the same company; add OWNERDOMAIN to make that explicit. Otherwise these accounts may belong to someone else.

How to fixIf the account is yours under another domain, declare it with OWNERDOMAIN=<that domain>; otherwise mark it RESELLER.

Evidence (5)

line 303    connatix.com, 1036559073130390, DIRECT, 2af98acdee0e81ed
             → domain in sellers.json: d17.com  name in sellers.json: SAN Publisher Intelligence LLP DBA Spiny.ai
line 397    lijit.com, 418348, DIRECT, fafdf38b16bf6b2b #SOVRN
             → domain in sellers.json: jwplayer.com  name in sellers.json: JWPlayer
line 412    admanmedia.com, 1061, DIRECT
             → domain in sellers.json: wunderkind.co  name in sellers.json: Wunderkind
line 466    mediafuse.com, 796, DIRECT
             → domain in sellers.json: blitz.gg  name in sellers.json: Blitz App Inc
line 497    smilewanted.com, 6206, DIRECT
             → domain in sellers.json: imds.tv  name in sellers.json: Advertising.com

info

Duplicate lines

41 −1 pts

Harmless but a sign of copy-paste maintenance.

How to fixRemove duplicates; keep one copy of each line.

Evidence (25 of 41)

ad_system: google.com  seller_id: pub-4903453974745530  relationship: RESELLER
ad_system: google.com  seller_id: pub-9135355251665930  relationship: RESELLER
ad_system: appnexus.com  seller_id: 16912  relationship: RESELLER
ad_system: aps.amazon.com  seller_id: ec4e8edf-c46b-44a1-bcab-17b3a4420b9a  relationship: RESELLER
ad_system: video.unrulymedia.com  seller_id: 776418614052335749  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 13510  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156538  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 81564  relationship: RESELLER
ad_system: appnexus.com  seller_id: 8233  relationship: RESELLER
ad_system: adform.com  seller_id: 1942  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 160295  relationship: RESELLER
ad_system: xandr.com  seller_id: 14082  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 23876  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156212  relationship: RESELLER
ad_system: indexexchange.com  seller_id: 192410  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 11006  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 161593  relationship: RESELLER
ad_system: appnexus.com  seller_id: 13099  relationship: RESELLER
ad_system: ad-generation.jp  seller_id: 12474  relationship: RESELLER
ad_system: admanmedia.com  seller_id: 726  relationship: RESELLER
ad_system: beachfront.com  seller_id: 14804  relationship: RESELLER
ad_system: contextweb.com  seller_id: 562541  relationship: RESELLER
ad_system: districtm.io  seller_id: 100962  relationship: RESELLER
ad_system: gumgum.com  seller_id: 14141  relationship: RESELLER
ad_system: lijit.com  seller_id: 375328  relationship: RESELLER

info

Ad systems without a public sellers.json

103

The ad system doesn't publish a readable sellers.json, so nobody can verify these lines. That's the ad system's gap, not the app's, so no points are deducted.

How to fixAsk the partner to publish sellers.json; until then buyers can't verify that path.

Evidence (25 of 103)

line 15     appnexus.com,16912,RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 20     openx.com, 563905670, DIRECT, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 28     openx.com, 540847574, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 36     appnexus.com, 8233, RESELLER
             → sellers_json: HTTP 403
line 38     openx.com, 539625136, RESELLER
             → sellers_json: HTTP 403
line 52     appnexus.com, 12753, RESELLER
             → sellers_json: HTTP 403
line 54     freewheel.tv, 1442946, RESELLER
             → sellers_json: HTTP 403
line 59     freewheel.tv, 1446450, RESELLER
             → sellers_json: HTTP 403
line 60     gannett.com, 22597404845, DIRECT
             → sellers_json: HTTP 403
line 64     freewheel.tv, 1605137, RESELLER
             → sellers_json: HTTP 403
line 65     freewheel.tv, 1605175, RESELLER
             → sellers_json: HTTP 403
line 71     openx.com, 557564833, RESELLER
             → sellers_json: HTTP 403
line 97     appnexus.com, 8354, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 100    freewheel.tv, 1607068, RESELLER, 74e8e47458f74754
             → sellers_json: HTTP 403
line 101    freewheel.tv, 1607069, RESELLER, 74e8e47458f74754
             → sellers_json: HTTP 403
line 102    openx.com, 539363661, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 109    openx.com, 540021061, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 121    openx.com, 538995730, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 126    openx.com, 540922801, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 136    openx.com, 540302365, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 137    openx.com, 539708628, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 138    openx.com, 539462051, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 140    appnexus.com, 1321, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 143    openx.com, 538929384, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 145    rhythmone.com, 1149317856, RESELLER, a670c89d4a324e47
             → sellers_json: HTTP 403

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