Ad system
castiron.media
castiron.media is the domain an ad system uses in app-ads.txt and ads.txt files. 18 apps in our data declare it. Its sellers.json lists 4 sellers.
- Apps declaring it
- 18
- Sellers in sellers.json
- 4
- Lines verified
- 100%
- Lines with errors
- 0
- Avg. supply path score
- 57.2 / 100
18 DIRECT · 0 RESELLER
0% confidential
3 of 3 checked lines
3 lines in total
18 apps scored
Apps and lines are recounted every 10 minutes. The sellers.json breakdown and the directory ranking are as of , recomputed daily. sellers.json last read 5 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 castiron.media 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.
castiron.media, YOUR_ACCOUNT_ID, DIRECT
castiron.media, YOUR_ACCOUNT_ID, RESELLER- Field 1:
castiron.media, the domain castiron.media uses in app-ads.txt. - Field 2: your account ID with castiron.media. It must equal the
seller_idin castiron.media'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): a certification authority ID. Most lines naming castiron.media carry none, or different ones, so we do not suggest one.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 4
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 0
- Last read
- Oct 5, 2026
- PUBLISHER4
- INTERMEDIARY0
- BOTH0
Cross-check of lines naming castiron.media
- Verified 3
- Seller ID not found 0
- DIRECT but intermediary 0
- RESELLER but publisher 0
- Seller type BOTH 0
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming castiron.media is looked up in its sellers.json. What each status means
Apps that declare castiron.media
| App | Store | Relationship | Status |
|---|---|---|---|
| iOS | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| iOS | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live |
Questions about castiron.media
How do I add castiron.media to app-ads.txt?
Add one line for each account castiron.media gives you: "castiron.media, YOUR_ACCOUNT_ID, DIRECT". Use DIRECT when you hold the account yourself and RESELLER when a partner holds it and sells your inventory through castiron.media. The account ID must be the seller_id castiron.media lists for you in its sellers.json; castiron.media will give it to you. Put the file at the root of the domain named as your developer website in the App Store and Google Play listings.
Does castiron.media publish a sellers.json?
Yes. Its file at https://cdn.castiron.media/sellers.json listed 4 sellers when we last read it on 5 October 2026: 4 publishers, 0 intermediaries and 0 listed as both; 0% are confidential.
How many apps declare castiron.media in app-ads.txt?
18 apps in Stoqlab's data (delisted apps included) declare castiron.media: 18 with at least one DIRECT line and 0 with at least one RESELLER line, across 3 app-ads.txt files. Counts are recomputed daily.
What is the difference between DIRECT and RESELLER?
DIRECT means the publisher owns the account; RESELLER means an intermediary sells the inventory on the publisher's behalf. DIRECT lines should match a PUBLISHER entry in the network's sellers.json, RESELLER lines an INTERMEDIARY entry.
Sources: the public app-ads.txt files of tracked apps and the sellers.json of castiron.media. Something wrong? Tell us.