Ad system
iion.io
Most of the 126,958 apps that declare iion.io reach it through a reseller: 99% have a RESELLER line, 22% a DIRECT one (17,479 files, 14,709 of them through BidMachine's account). Its sellers.json lists 320 sellers, and 93% of the 48,402 lines we checked against it match. 61% of the lines carry the certification ID 013a29748465dc57.
- Apps declaring it
- 126,958
- Sellers in sellers.json
- 320
- Lines verified
- 93%
- Lines with errors
- 2,100
- Avg. supply path score
- 51.9 / 100
27,493 DIRECT · 125,989 RESELLER
0% confidential
45,854 of 49,116 checked lines
49,116 lines in total
124,994 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 iion.io 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.
iion.io, YOUR_ACCOUNT_ID, DIRECT, 013a29748465dc57
iion.io, YOUR_ACCOUNT_ID, RESELLER, 013a29748465dc57- Field 1:
iion.io, the domain iion.io uses in app-ads.txt. - Field 2: your account ID with iion.io. It must equal the
seller_idin iion.io'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):
013a29748465dc57, the certification authority ID on 61% of the lines naming iion.io.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 320
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 0
- Last read
- Oct 13, 2026
- PUBLISHER268
- INTERMEDIARY32
- BOTH20
Cross-check of lines naming iion.io
- Verified 45,854
- Seller ID not found 287
- DIRECT but intermediary 320
- RESELLER but publisher 1,493
- Seller type BOTH 1,162
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming iion.io is looked up in its sellers.json. What each status means
Common errors with iion.io lines
-
RESELLER but publisher
1,493 lines
If the account is yours, declare it DIRECT. If a partner holds it, ask iion.io why the account is listed as PUBLISHER.
-
Seller type BOTH
1,162 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.
-
DIRECT but intermediary
320 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask iion.io to list it as PUBLISHER.
-
Seller ID not found
287 lines
Ask iion.io 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.
Intermediaries most declared as RESELLER
Accounts on iion.io 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 |
|---|---|---|
| bidmachine.io | INTERMEDIARY | 14,709 |
| digitalturbine.com | INTERMEDIARY | 6,880 |
| anzu.io | INTERMEDIARY | 5,705 |
| smaato.com | INTERMEDIARY | 5,524 |
| inmobi.com | INTERMEDIARY | 2,392 |
| pubnative.net | INTERMEDIARY | 2,071 |
| zmaticoo.com | INTERMEDIARY | 1,334 |
| aps.amazon.com | INTERMEDIARY | 1,283 |
Apps that declare iion.io
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live |
Questions about iion.io
Does iion.io publish a sellers.json?
Yes. Its file at https://pubs.iion.io/sellers.json listed 320 sellers when we last read it on 13 October 2026: 268 publishers, 32 intermediaries and 20 listed as both; 0% are confidential.
How many apps declare iion.io in app-ads.txt?
126,958 apps in Stoqlab's data (delisted apps included) declare iion.io: 27,493 with at least one DIRECT line and 125,989 with at least one RESELLER line, across 17,479 app-ads.txt files, as of 14 October 2026 (recounted daily).
What is the certification authority ID for iion.io?
61% of the app-ads.txt lines naming iion.io carry "013a29748465dc57" 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 iion.io lines fail verification?
Of 49,116 lines naming iion.io, 2,100 contradict its sellers.json. The most common case is "RESELLER but publisher", on 1,493 lines. If the account is yours, declare it DIRECT. If a partner holds it, ask iion.io why the account is listed as PUBLISHER.
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 iion.io. Something wrong? Tell us.