SSP
GumGum
gumgum.com
GumGum is a contextual advertising company with a sell-side platform.
Most of the 77,467 apps that declare gumgum.com reach it through a reseller: 98% have a RESELLER line, 15% a DIRECT one (11,110 files, 2,769 of them through netaddiction.it's account). 34% of the 28,473 lines checked name an account its sellers.json (596 sellers) does not list. 3 sellers left its sellers.json in the last 30 days.
- Apps declaring it
- 77,467
- Sellers in sellers.json
- 596
- Lines verified
- 19%
- Lines with errors
- 16,426
- Avg. supply path score
- 49.3 / 100
11,453 DIRECT · 75,518 RESELLER
0% confidential
5,582 of 28,912 checked lines
28,912 lines in total
80,347 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 GumGum 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.
gumgum.com, YOUR_ACCOUNT_ID, DIRECT, ffdef49475d318a9
gumgum.com, YOUR_ACCOUNT_ID, RESELLER, ffdef49475d318a9- Field 1:
gumgum.com, the domain GumGum uses in app-ads.txt. - Field 2: your account ID with GumGum. It must equal the
seller_idin GumGum'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):
ffdef49475d318a9, the certification authority ID on 96% of the lines naming gumgum.com.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 596
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 3
- Last read
- Oct 13, 2026
- PUBLISHER445
- INTERMEDIARY96
- BOTH55
Cross-check of lines naming gumgum.com
- Verified 5,582
- Seller ID not found 9,919
- DIRECT but intermediary 1,008
- RESELLER but publisher 5,499
- Seller type BOTH 6,904
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming gumgum.com is looked up in its sellers.json. What each status means
Common errors with gumgum.com lines
-
Seller ID not found
9,919 lines
Ask GumGum 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
6,904 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
5,499 lines
If the account is yours, declare it DIRECT. If a partner holds it, ask GumGum why the account is listed as PUBLISHER.
-
DIRECT but intermediary
1,008 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask GumGum to list it as PUBLISHER.
Intermediaries most declared as RESELLER
Accounts on gumgum.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 |
|---|---|---|
| netaddiction.it | BOTH | 2,769 |
| aps.amazon.com | BOTH | 2,172 |
| videoheroes.tv | BOTH | 1,227 |
| risecodes.com | INTERMEDIARY | 894 |
| bold-win.com | INTERMEDIARY | 624 |
| display.io | INTERMEDIARY | 569 |
| nobid.io | INTERMEDIARY | 309 |
| orka.tv | INTERMEDIARY | 249 |
Apps that declare gumgum.com
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| iOS | DIRECT | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live |
Questions about GumGum
Does GumGum publish a sellers.json?
Yes. Its file at https://gumgum.com/sellers.json listed 596 sellers when we last read it on 13 October 2026: 445 publishers, 96 intermediaries and 55 listed as both; 0% are confidential.
How many apps declare GumGum in app-ads.txt?
77,467 apps in Stoqlab's data (delisted apps included) declare gumgum.com: 11,453 with at least one DIRECT line and 75,518 with at least one RESELLER line, across 11,110 app-ads.txt files, as of 13 October 2026 (recounted daily).
What is the certification authority ID for GumGum?
96% of the app-ads.txt lines naming gumgum.com carry "ffdef49475d318a9" 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 gumgum.com lines fail verification?
Of 28,912 lines naming gumgum.com, 16,426 contradict its sellers.json. The most common case is "Seller ID not found", on 9,919 lines. Ask GumGum 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 gumgum.com. Something wrong? Tell us.