Ad system
book.com
All 6 apps that declare book.com hold a DIRECT account with it (3 app-ads.txt files). We found no readable sellers.json for book.com, so none of the 3 lines naming it can be checked. 100% of the lines carry the certification ID c3e20eee3f780d68.
- Apps declaring it
- 6
- Sellers in sellers.json
- 0
- Lines verified
- —
- Lines with errors
- 0
- Avg. supply path score
- 51.0 / 100
6 DIRECT · 0 RESELLER
Unreachable
no line checked yet
3 lines in total
6 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 11 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 book.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.
book.com, YOUR_ACCOUNT_ID, DIRECT, c3e20eee3f780d68
book.com, YOUR_ACCOUNT_ID, RESELLER, c3e20eee3f780d68- Field 1:
book.com, the domain book.com uses in app-ads.txt. - Field 2: your account ID with book.com. It must equal the
seller_idin book.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):
c3e20eee3f780d68, the certification authority ID on 100% of the lines naming book.com.
sellers.json at a glance
- Status
- Unreachable
- Sellers listed
- 0
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 0
- Last read
- Oct 11, 2026
Cross-check of lines naming book.com
- Verified 0
- 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 3
Every line naming book.com is looked up in its sellers.json. What each status means
Apps that declare book.com
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| iOS | DIRECT | Live | |
| iOS | DIRECT | Live |
Questions about book.com
Does book.com publish a sellers.json?
We could not reach it (last attempt 11 October 2026). Lines naming book.com stay unchecked until it answers again.
How many apps declare book.com in app-ads.txt?
6 apps in Stoqlab's data (delisted apps included) declare book.com: 6 with at least one DIRECT line and 0 with at least one RESELLER line, across 3 app-ads.txt files, as of 12 October 2026 (recounted daily).
What is the certification authority ID for book.com?
100% of the app-ads.txt lines naming book.com carry "c3e20eee3f780d68" 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.
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 book.com. Something wrong? Tell us.