Ad system
uis.mobfox.com
Most of the 127,823 apps that declare uis.mobfox.com reach it through a reseller: 96% have a RESELLER line, 31% a DIRECT one (18,347 files, 10,269 of them through toponad.com's account). 36% of the 64,407 lines checked name an account its sellers.json (579 sellers) does not list. 90% of the lines carry the certification ID 5529a3d1f59865be.
- Apps declaring it
- 127,823
- Sellers in sellers.json
- 579
- Lines verified
- 61%
- Lines with errors
- 24,277
- Avg. supply path score
- 49.6 / 100
39,106 DIRECT · 123,225 RESELLER
0.2% confidential
39,949 of 65,203 checked lines
65,203 lines in total
125,629 apps scored
App counts, the sellers.json breakdown and the directory ranking are as of , recomputed daily (the same numbers as the directory). Line counts are recounted every 10 minutes. sellers.json last read 13 October 2026. The supply path score sums up how short and clean the declared paths are, 0 to 100 (how it is computed).
How to add uis.mobfox.com to app-ads.txt
One line per account, in the app-ads.txt at the root of the domain your App Store and Google Play listings name as the developer website.
uis.mobfox.com, YOUR_ACCOUNT_ID, DIRECT, 5529a3d1f59865be
uis.mobfox.com, YOUR_ACCOUNT_ID, RESELLER, 5529a3d1f59865be- Field 1:
uis.mobfox.com, the domain uis.mobfox.com uses in app-ads.txt. - Field 2: your account ID with uis.mobfox.com. It must equal the
seller_idin uis.mobfox.com's sellers.json. - Field 3: DIRECT if you hold the account, RESELLER if a partner holds it and sells your inventory. DIRECT vs RESELLER
- Field 4 (optional):
5529a3d1f59865be, the certification authority ID on 90% of the lines naming uis.mobfox.com.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 579
- Confidential
- 1 (0.2%)
- Passthrough
- 0
- Removed, last 30 days
- 0
- Last read
- Oct 13, 2026
- PUBLISHER542
- INTERMEDIARY32
- BOTH5
Cross-check of lines naming uis.mobfox.com
- Verified 39,949
- Seller ID not found 23,400
- DIRECT but intermediary 305
- RESELLER but publisher 572
- Seller type BOTH 977
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming uis.mobfox.com is looked up in its sellers.json. What each status means
Common errors with uis.mobfox.com lines
-
Seller ID not found
23,400 lines
Ask uis.mobfox.com for the account ID it lists for you in its sellers.json, correct the line, or remove it if you no longer work with them. Buyers that check sellers.json drop these paths.
-
Seller type BOTH
977 lines
The account is listed as BOTH, so sellers.json alone cannot tell a buyer which relationship applies. Nothing to fix on your side; buyers usually look at the seller's domain.
-
RESELLER but publisher
572 lines
If the account is yours, declare it DIRECT. If a partner holds it, ask uis.mobfox.com why the account is listed as PUBLISHER.
-
DIRECT but intermediary
305 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask uis.mobfox.com to list it as PUBLISHER.
Intermediaries most declared as RESELLER
Accounts on uis.mobfox.com that its sellers.json lists as INTERMEDIARY or BOTH, by the number of app-ads.txt files declaring them. Confidential sellers are left out.
| Seller domain | Type | Files |
|---|---|---|
| toponad.com | INTERMEDIARY | 10,269 |
| smaato.com | INTERMEDIARY | 8,763 |
| chartboost.com | INTERMEDIARY | 6,623 |
| taurusx.com | INTERMEDIARY | 3,592 |
| pubnative.net | INTERMEDIARY | 2,783 |
| aps.amazon.com | INTERMEDIARY | 2,027 |
| gadsme.com | BOTH | 846 |
| algorix.co | INTERMEDIARY | 597 |
Apps that declare uis.mobfox.com
| App | Store | Relationship | Status |
|---|---|---|---|
| iOS | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| iOS | DIRECT + RESELLER | Live | |
| iOS | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live |
Questions about uis.mobfox.com
Does uis.mobfox.com publish a sellers.json?
Yes. Its file at https://uis.mobfox.com/sellers.json listed 579 sellers when we last read it on 13 October 2026: 542 publishers, 32 intermediaries and 5 listed as both; 0.2% are confidential.
How many apps declare uis.mobfox.com in app-ads.txt?
127,823 apps in Stoqlab's data (delisted apps included) declare uis.mobfox.com: 39,106 with at least one DIRECT line and 123,225 with at least one RESELLER line, across 18,347 app-ads.txt files, as of 14 October 2026 (recounted daily).
What is the certification authority ID for uis.mobfox.com?
90% of the app-ads.txt lines naming uis.mobfox.com carry "5529a3d1f59865be" in the fourth field. The field is optional; the IAB Tech Lab ads.txt 1.1 specification says identifiers in sellers.json supersede it, so a missing or different value does not make a line invalid.
Why do uis.mobfox.com lines fail verification?
Of 65,203 lines naming uis.mobfox.com, 24,277 contradict its sellers.json. The most common case is "Seller ID not found", on 23,400 lines. Ask uis.mobfox.com for the account ID it lists for you in its sellers.json, correct the line, or remove it if you no longer work with them. Buyers that check sellers.json drop these paths.
Not sure whether your line should say DIRECT or RESELLER? DIRECT vs RESELLER in app-ads.txt
Sources: the public app-ads.txt files of tracked apps and the sellers.json of uis.mobfox.com. Something wrong? Tell us.