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Stoqlab

Ad system

opera.com

opera.com is the domain an ad system uses in app-ads.txt and ads.txt files. 147,920 apps in our data declare it. Its sellers.json lists 159 sellers.

Check an app-ads.txt Open in dashboard
Apps declaring it
147,920

66,126 DIRECT · 147,316 RESELLER

Sellers in sellers.json
159

0% confidential

Lines verified
—

sellers.json incomplete

Lines with errors
89,501

258,351 lines in total

Avg. supply path score
51.8 / 100

145,311 apps scored

opera.com's sellers.json looks incomplete: it lists 159 sellers, while app-ads.txt files name 187 other opera.com accounts it does not list. A line it does not list may be a seller the network never published rather than a stale line, so we show no verified or not-listed share for it.

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 opera.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.

opera.com, YOUR_ACCOUNT_ID, DIRECT, 55a0c5fd61378de3
opera.com, YOUR_ACCOUNT_ID, RESELLER, 55a0c5fd61378de3
  • Field 1: opera.com, the domain opera.com uses in app-ads.txt.
  • Field 2: your account ID with opera.com. It must equal the seller_id in opera.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): 55a0c5fd61378de3, the certification authority ID on 99% of the lines naming opera.com.

sellers.json at a glance

Status
Published
Sellers listed
159
Confidential
0 (0%)
Passthrough
0
Removed, last 30 days
3
Last read
Oct 9, 2026
  • PUBLISHER33
  • INTERMEDIARY123
  • BOTH3

Cross-check of lines naming opera.com

  • Verified 168,782
  • Seller ID not found 84,969
  • DIRECT but intermediary 4,482
  • RESELLER but publisher 50
  • Seller type BOTH 68
  • Confidential seller 0
  • No sellers.json 0
  • Unchecked 0

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

Common errors with opera.com lines

  • Seller ID not found 84,969 lines

    Ask opera.com 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 4,482 lines

    If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask opera.com to list it as PUBLISHER.

  • Seller type BOTH 68 lines

    The account is listed as BOTH, so sellers.json alone cannot tell a buyer which relationship applies. Nothing to fix on your side; buyers usually look at the seller's domain.

  • RESELLER but publisher 50 lines

    If the account is yours, declare it DIRECT. If a partner holds it, ask opera.com why the account is listed as PUBLISHER.

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

Intermediaries most declared as RESELLER

Accounts on opera.com 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
bidmachine.io INTERMEDIARY 13,086
start.io INTERMEDIARY 10,424
loopme.com INTERMEDIARY 9,669
applovin.com INTERMEDIARY 9,384
inmobi.com INTERMEDIARY 9,183
zmaticoo.com INTERMEDIARY 8,990
vungle.com INTERMEDIARY 8,946
smaato.com INTERMEDIARY 8,790

Apps that declare opera.com

AppStoreRelationshipStatus
Harry Potter: Hogwarts Mystery Harry Potter: Hogwarts Mystery
 Android DIRECT + RESELLER Live
MARVEL Future Fight MARVEL Future Fight
 Android DIRECT + RESELLER Live
PDF Scanner app - TapScanner PDF Scanner app - TapScanner
 Android RESELLER Live
Talking Tom Cat Talking Tom Cat
 Android DIRECT + RESELLER Live
Bubble Witch 2 Saga Bubble Witch 2 Saga
 Android DIRECT + RESELLER Live
MyFitnessPal: Calorie Counter MyFitnessPal: Calorie Counter
 Android RESELLER Live
Pizza Ready! Pizza Ready!
 Android DIRECT + RESELLER Live
Document Scanner - PDF Creator Document Scanner - PDF Creator
 Android RESELLER Live
Blockman Go Blockman Go
 Android RESELLER Live
Paper.io 2 Paper.io 2
 iOS DIRECT + RESELLER Live
Stickman Party 234 MiniGames Stickman Party 234 MiniGames
 Android DIRECT + RESELLER Live
Mi Music Mi Music
 Android DIRECT + RESELLER Live
Tank Stars Tank Stars
 Android DIRECT + RESELLER Live
Asphalt Legends - Racing Game Asphalt Legends - Racing Game
 Android DIRECT + RESELLER Live
Six Pack in 30 Days Six Pack in 30 Days
 Android RESELLER Live
Aquapark.io Aquapark.io
 iOS DIRECT + RESELLER Live
CATS: Crash Arena Turbo Stars CATS: Crash Arena Turbo Stars
 Android RESELLER Live
OK: Social Network OK: Social Network
 Android DIRECT + RESELLER Live
TuneIn Radio: Music & Sports TuneIn Radio: Music & Sports
 Android DIRECT + RESELLER Live
Episode - Choose Your Story Episode - Choose Your Story
 iOS RESELLER Live

Questions about opera.com

How do I add opera.com to app-ads.txt?

Add one line for each account opera.com gives you: "opera.com, YOUR_ACCOUNT_ID, DIRECT, 55a0c5fd61378de3". Use DIRECT when you hold the account yourself and RESELLER when a partner holds it and sells your inventory through opera.com. The account ID must be the seller_id opera.com lists for you in its sellers.json; opera.com 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 opera.com publish a sellers.json?

Yes. Its file at https://res.adx.opera.com/sellers.json listed 159 sellers when we last read it on 9 October 2026: 33 publishers, 123 intermediaries and 3 listed as both; 0% are confidential.

How many apps declare opera.com in app-ads.txt?

147,920 apps in Stoqlab's data (delisted apps included) declare opera.com: 66,126 with at least one DIRECT line and 147,316 with at least one RESELLER line, across 21,299 app-ads.txt files. Counts are recomputed daily.

What is the certification authority ID for opera.com?

99% of the app-ads.txt lines naming opera.com carry "55a0c5fd61378de3" 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 opera.com lines fail verification?

Of 258,351 lines naming opera.com, 89,501 contradict its sellers.json. The most common case is "Seller ID not found" (84,969 lines): Ask opera.com 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 opera.com. Something wrong? Tell us.