Android · GauthTech Pte. Ltd.

Gauth: AI Study Companion

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

59/100

65 lines · 34 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

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

10 −20 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 (10)

line 3      google.com, pub-3940256099942544, DIRECT, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 19     themediagrid.com, R28I9J, RESELLER, 35d5010d7789b49d
             → sellers_json: https://themediagrid.com/sellers.json
line 23     improvedigital.com, 1720, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 29     improvedigital.com, 1366, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 38     onetag.com, 59aa7be4921bac8, RESELLER
             → sellers_json: https://onetag.com/sellers.json
line 43     themediagrid.com, R28I9J, RESELLER, 35d5010d7789b49d
             → sellers_json: https://themediagrid.com/sellers.json
line 47     meitu.com, 621, RESELLER
             → sellers_json: https://www.meitu.com/sellers.json
line 48     algorix.co, 60055, RESELLER, 5b394c12fea27a1d
             → sellers_json: https://algorix.co/sellers.json
line 49     admixer.net, 75e4a586-442d-47c3-ac85-0b5b00547cdd, RESELLER
             → sellers_json: https://admixer.net/sellers.json
line 57     sonobi.com, 442a7bfdb0, RESELLER, d1a215d9eb5aee9e
             → sellers_json: https://sonobi.com/sellers.json

warning

DIRECT lines inconsistent with public data

1 −10 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 (1)

line 3      google.com, pub-3940256099942544, DIRECT, f08c47fec0942fa0
             → observed: the same account is marked DIRECT by 39 different companies

warning

Lines for ad system domains that don't resolve

5 −8 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 (5)

line 21     spotxchange.com, 295535, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 30     engagebdr.com, 10252, RESELLER
             → ad_system: engagebdr.com
line 35     spotxchange.com, 234183, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 63     reforge.in, 353, RESELLER
             → ad_system: reforge.in
line 64     districtm.io, 102098, RESELLER, 3fd707be9c4527c3
             → ad_system: districtm.io

info

No OWNERDOMAIN declared

1 −2 pts

app-ads.txt 1.1 recommends OWNERDOMAIN so buyers can match DIRECT accounts to the owner.

How to fixAdd OWNERDOMAIN=<your company domain> to the file.

info

Duplicate lines

2 −1 pts

Harmless but a sign of copy-paste maintenance.

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

Evidence (2)

ad_system: lunamedia.io  seller_id: 193bca549318aed0434226d4d73e13f3  relationship: RESELLER
ad_system: themediagrid.com  seller_id: r28i9j  relationship: RESELLER

info

Ad systems without a public sellers.json

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 (14)

line 10     appnexus.com, 10005, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 14     mobfox.com, 82593, RESELLER, 5529a3d1f59865be
             → sellers_json: HTTP 403
line 15     openx.com, 540338069, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 16     rhythmone.com, 1605779867, RESELLER, a670c89d4a324e47
             → sellers_json: HTTP 403
line 20     advertising.com, 28734, RESELLER
             → sellers_json: HTTP 403
line 28     adcolony.com, 1efc6603710003ea, RESELLER, 1ad675c9de6b5176
             → sellers_json: HTML or login page instead of JSON
line 33     sabio.us, 100032, RESELLER, 96ed93aaa9795702
             → sellers_json: HTTP 404
line 39     advertising.com, 28246, RESELLER
             → sellers_json: HTTP 403
line 46     loopme.com, 11367, RESELLER, 6c8d5f95897a5a3b
             → sellers_json: HTTP 403
line 52     groundtruth.com, 107, RESELLER, 81cbf0a75a5e0e9a
             → sellers_json: HTTP 403
line 54     adcolony.com, c490f6e7399a25d6, RESELLER, 1ad675c9de6b5176
             → sellers_json: HTML or login page instead of JSON
line 55     loopme.com, 11322, RESELLER, 6c8d5f95897a5a3b
             → sellers_json: HTTP 403
line 58     rhythmone.com, 1059622079, RESELLER, a670c89d4a324e47
             → sellers_json: HTTP 403
line 61     xad.com, 589, RESELLER, 81cbf0a75a5e0e9a
             → sellers_json: HTTP 403

info

DIRECT accounts marked confidential

Buyers can't see who owns these accounts.

How to fixAsk the ad system to publish your seller entry with name and domain.

Evidence (1)

line 2      google.com, pub-1117588435815700, DIRECT, f08c47fec0942fa0

Is this your app?

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