Ad network and mediation

ironSource (Unity)

ironsrc.com

ironsrc.com is the domain of ironSource's in-app ad network and its LevelPlay mediation platform. ironSource merged with Unity in 2022.

103,334 apps across 12,948 app-ads.txt files declare ironsrc.com; 92% hold a DIRECT account and 52% list it as a RESELLER. Of 42,433 lines checked against its sellers.json (5,259 sellers), 46% match, 11% name an unlisted account and 42% declare the wrong seller type. 53% of the lines carry the certification ID 79929e88b2ba73bc.

Apps declaring it
103,334

94,644 DIRECT · 53,545 RESELLER

Sellers in sellers.json
5,259

0% confidential

Lines verified
46%

19,749 of 42,564 checked lines

Lines with errors
22,815

42,564 lines in total

Avg. supply path score
50.0 / 100

102,025 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 ironSource (Unity) 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.

ironsrc.com, YOUR_ACCOUNT_ID, DIRECT, 79929e88b2ba73bc
ironsrc.com, YOUR_ACCOUNT_ID, RESELLER, 79929e88b2ba73bc
  • Field 1: ironsrc.com, the domain ironSource (Unity) uses in app-ads.txt.
  • Field 2: your account ID with ironSource (Unity). It must equal the seller_id in ironSource (Unity)'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): 79929e88b2ba73bc, the certification authority ID on 53% of the lines naming ironsrc.com.

sellers.json at a glance

Status
Published
Sellers listed
5,259
Confidential
0 (0%)
Passthrough
0
Removed, last 30 days
0
Last read
Oct 13, 2026
  • PUBLISHER5,259
  • INTERMEDIARY0
  • BOTH0

Cross-check of lines naming ironsrc.com

  • Verified 19,749
  • Seller ID not found 4,762
  • DIRECT but intermediary 0
  • RESELLER but publisher 18,053
  • Seller type BOTH 0
  • Confidential seller 0
  • No sellers.json 0
  • Unchecked 0

Every line naming ironsrc.com is looked up in its sellers.json. What each status means

Common errors with ironsrc.com lines

  • RESELLER but publisher 18,053 lines

    If the account is yours, declare it DIRECT. If a partner holds it, ask ironSource (Unity) why the account is listed as PUBLISHER.

  • Seller ID not found 4,762 lines

    Ask ironSource (Unity) 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.

Common app-ads.txt errors and how to fix them

Apps that declare ironsrc.com

AppStoreRelationshipStatus
iOS DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT Live
Android DIRECT Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT Live
Android DIRECT Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT Live
Android DIRECT + RESELLER Live
Android DIRECT + RESELLER Live
Android DIRECT Live
Android DIRECT + RESELLER Live

Questions about ironSource (Unity)

Does ironSource (Unity) publish a sellers.json?

Yes. Its file at https://www.ironsrc.com/sellers.json listed 5,259 sellers when we last read it on 13 October 2026: 5,259 publishers, 0 intermediaries and 0 listed as both; 0% are confidential.

How many apps declare ironSource (Unity) in app-ads.txt?

103,334 apps in Stoqlab's data (delisted apps included) declare ironsrc.com: 94,644 with at least one DIRECT line and 53,545 with at least one RESELLER line, across 12,948 app-ads.txt files, as of 14 October 2026 (recounted daily).

What is the certification authority ID for ironSource (Unity)?

53% of the app-ads.txt lines naming ironsrc.com carry "79929e88b2ba73bc" 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 ironsrc.com lines fail verification?

Of 42,564 lines naming ironsrc.com, 22,815 contradict its sellers.json. The most common case is "RESELLER but publisher", on 18,053 lines. If the account is yours, declare it DIRECT. If a partner holds it, ask ironSource (Unity) 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 ironsrc.com. Something wrong? Tell us.