Ad system
udmserve.net
udmserve.net is the domain an ad system uses in app-ads.txt and ads.txt files. 4,827 apps in our data declare it. Its sellers.json lists 147 sellers.
- Apps declaring it
- 4,827
- Sellers in sellers.json
- 147
- Lines verified
- 6%
- Lines with errors
- 500
- Avg. supply path score
- 50.1 / 100
4,817 DIRECT · 10 RESELLER
0% confidential
32 of 532 checked lines
532 lines in total
4,692 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 9 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 udmserve.net 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.
udmserve.net, YOUR_ACCOUNT_ID, DIRECT, 0cf60ed62b5f3e40
udmserve.net, YOUR_ACCOUNT_ID, RESELLER, 0cf60ed62b5f3e40- Field 1:
udmserve.net, the domain udmserve.net uses in app-ads.txt. - Field 2: your account ID with udmserve.net. It must equal the
seller_idin udmserve.net'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):
0cf60ed62b5f3e40, the certification authority ID on 100% of the lines naming udmserve.net.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 147
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 5
- Last read
- Oct 9, 2026
- PUBLISHER142
- INTERMEDIARY5
- BOTH0
Cross-check of lines naming udmserve.net
- Verified 32
- Seller ID not found 494
- DIRECT but intermediary 6
- RESELLER but publisher 0
- Seller type BOTH 0
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming udmserve.net is looked up in its sellers.json. What each status means
Common errors with udmserve.net lines
-
Seller ID not found
494 lines
Ask udmserve.net 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.
-
DIRECT but intermediary
6 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask udmserve.net to list it as PUBLISHER.
Intermediaries most declared as RESELLER
Accounts on udmserve.net 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 |
|---|---|---|
| nwmediapartners.com | INTERMEDIARY | 3 |
Apps that declare udmserve.net
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| Android | DIRECT | Live | |
| iOS | RESELLER | Live | |
| Android | DIRECT | Live |
Questions about udmserve.net
How do I add udmserve.net to app-ads.txt?
Add one line for each account udmserve.net gives you: "udmserve.net, YOUR_ACCOUNT_ID, DIRECT, 0cf60ed62b5f3e40". Use DIRECT when you hold the account yourself and RESELLER when a partner holds it and sells your inventory through udmserve.net. The account ID must be the seller_id udmserve.net lists for you in its sellers.json; udmserve.net 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 udmserve.net publish a sellers.json?
Yes. Its file at https://udmserve.net/sellers.json listed 147 sellers when we last read it on 9 October 2026: 142 publishers, 5 intermediaries and 0 listed as both; 0% are confidential.
How many apps declare udmserve.net in app-ads.txt?
4,827 apps in Stoqlab's data (delisted apps included) declare udmserve.net: 4,817 with at least one DIRECT line and 10 with at least one RESELLER line, across 530 app-ads.txt files. Counts are recomputed daily.
What is the certification authority ID for udmserve.net?
100% of the app-ads.txt lines naming udmserve.net carry "0cf60ed62b5f3e40" 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 udmserve.net lines fail verification?
Of 532 lines naming udmserve.net, 500 contradict its sellers.json. The most common case is "Seller ID not found" (494 lines): Ask udmserve.net 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.
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 udmserve.net. Something wrong? Tell us.