Ad system

udmserve.net

5,920 apps across 695 app-ads.txt files declare udmserve.net; 100% hold a DIRECT account and 0.2% list it as a RESELLER. 93% of the 699 lines checked name an account its sellers.json (145 sellers) does not list. 7 sellers left its sellers.json in the last 30 days.

Apps declaring it
5,920

5,909 DIRECT · 11 RESELLER

Sellers in sellers.json
145

0% confidential

Lines verified
5.3%

40 of 755 checked lines

Lines with errors
715

755 lines in total

Avg. supply path score
50.1 / 100

6,272 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 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_id in 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
145
Confidential
0 (0%)
Passthrough
0
Removed, last 30 days
7
Last read
Oct 13, 2026
  • PUBLISHER140
  • INTERMEDIARY5
  • BOTH0

Cross-check of lines naming udmserve.net

  • Verified 40
  • Seller ID not found 708
  • DIRECT but intermediary 7
  • 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 708 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 7 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.

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

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 domainTypeFiles
nwmediapartners.com INTERMEDIARY 4

Apps that declare udmserve.net

AppStoreRelationshipStatus
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 RESELLER 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
Android DIRECT Live

Questions about udmserve.net

Does udmserve.net publish a sellers.json?

Yes. Its file at https://udmserve.net/sellers.json listed 145 sellers when we last read it on 13 October 2026: 140 publishers, 5 intermediaries and 0 listed as both; 0% are confidential.

How many apps declare udmserve.net in app-ads.txt?

5,920 apps in Stoqlab's data (delisted apps included) declare udmserve.net: 5,909 with at least one DIRECT line and 11 with at least one RESELLER line, across 695 app-ads.txt files, as of 13 October 2026 (recounted 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 755 lines naming udmserve.net, 715 contradict its sellers.json. The most common case is "Seller ID not found", on 708 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.

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 udmserve.net. Something wrong? Tell us.