Start with the live form
Enter a domain, URL, IP, email, or record and get a focused result without setup.
All tools
Web Data
Domain Intelligence
DNS & Infrastructure
Security & Trust
Identity & Verification
Monitoring & Automation
ads.txt checker
Enter a domain to validate its ads.txt file and confirm authorized sellers against each ad system's sellers.json.
Results
Interactive intelligence tool
Run the check, then ship the workflow
Use the browser tool for a fast answer, then move the same logic into scripts, monitoring, or product flows when it becomes repeatable.
Review decision-ready signals
Outputs highlight statuses, risks, records, and next actions instead of raw provider noise.
Automate the workflow that works
Use the request and response examples to turn a one-off check into an API call or recipe.
Used by people at these companies
What this tool helps you decide
Each page is shaped around a practical operational question, not just a raw lookup.
See the current DNS, registration, security, pricing, or reputation evidence.
Compare the result with related checks so the next move is easier to trust.
Copy examples, open linked tools, or move into API documentation when you need scale.
Trust signals before you integrate
Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.
Service status
API artifacts
OpenAPI, Swagger, Postman, CLI, SDK, and MCP links are one click away.
API keys
Protected access
Authenticated endpoints use API keys with clear credit costs before you call them.
Free allowance
Sign up for free
Start with 10,000 monthly credits and upgrade only when usage grows.
Active
Example request
Start from the curl and HTTP samples, then map the parameters into your application code.
Key Features
Record validation
Every line is parsed and errors are reported with line numbers.
Seller confirmation
Seller IDs are checked against sellers.json through the API.
App inventory
Validate app-ads.txt for mobile and connected TV apps.
Example request
GET /v1/ads-txt?url=example.comGET /v1/ads-txt?url=example.com&verify_sellers=trueGET /v1/ads-txt?url=example.com&file=app-ads.txtBuilt on the same API
The browser experience previews DomScan's structured endpoints, so teams can validate a use case before writing code.
Frequently asked questions
Where must ads.txt be placed?
At the root of the domain, for example example.com/ads.txt, served as plain text.
What is the difference between DIRECT and RESELLER?
DIRECT means the publisher controls the account; RESELLER means another company sells the inventory on its behalf.
Why validate sellers.json?
A seller ID that sellers.json does not list, or lists with the wrong type, can make buyers skip your inventory.