99.99%
Uptime
Production-ready endpoints are designed for 99.99% uptime and documented status handling.
Category
Domain Availability
Endpoints
2
Key Features
8
Frequently Asked Questions
4
Used by people at amazing companies
Trust signals before you integrate
Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.
OpenAPI
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.
10,000
Free allowance
Start with 10,000 monthly credits and upgrade only when usage grows.
What this API helps you ship
Use this page as a production brief: endpoints, examples, response shape, and the workflow pieces needed to plug DomScan into your own product.
Embed domain checks, DNS intelligence, risk signals, or enrichment into onboarding, search, and internal tools.
Replace repeated manual lookups with scheduled jobs, alerting, and reproducible investigation steps.
Use predictable fields, documented status codes, and credit costs instead of scraping provider pages.
Feed agents, dashboards, SOAR playbooks, and CRMs through OpenAPI, SDK, Postman, or MCP.
Integration workflow
A simple path from first request to repeatable production usage.
Authenticate once
Send your API key with the documented header and keep requests consistent across services.
Query with examples
Start from the curl and HTTP samples, then map the parameters into your application code.
Operate and monitor
Use status codes, credit costs, and response fields to build retries, logs, and alerts.
Developer kit
Jump from this page into machine-readable docs, request collections, SDKs, or agent tooling.
OpenAPI schema
Generate clients or inspect every request and response shape.
Postman collectionImport ready-made requests for manual testing and team handoff.
SDKs and CLIUse maintained packages and command-line workflows instead of writing boilerplate.
MCP integrationExpose domain intelligence to AI agents and internal assistant workflows.
Parameters and response map
Scan the inputs, output fields, and status codes before wiring the endpoint into your client.
Parameter
nametldsdomainprefer_cachedomainsoptions
Example Response
nameresults
HTTP Status Codes
200400402429500502503504
Endpoints
GET
/v1/status
nametldsdomainprefer_cache
POST
/v1/status/bulk
domainsoptions
Trust signals before you integrate
Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.
Uptime
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
Instant Results
Get domain availability status in milliseconds with intelligent caching.
1,500+ TLDs Supported
Check .com, .net, .org, .io, and hundreds more extensions.
Free to Start
Sign up free and get 10,000 credits per month. No credit card required.
Bulk Checking
Check multiple domains at once with our bulk endpoint.
RDAP Powered
Direct queries to authoritative registries for accurate data.
AI Integration
Works with Claude and other AI assistants via MCP.
JSON Responses
Clean, structured JSON output ready for any application.
Global Edge Network
Deployed on Cloudflare for low latency worldwide.
Example Request
curl -H "X-API-Key: $DOMSCAN_API_KEY" "https://domscan.net/v1/status?name=mycompany&tlds=com,net,org"Example Response
{
"name": "mycompany",
"results": [
{ "domain": "mycompany.com", "available": false, "source": "rdap" },
{ "domain": "mycompany.net", "available": true, "source": "rdap" },
{ "domain": "mycompany.org", "available": false, "source": "rdap" }
]
}Frequently Asked Questions
How accurate is the domain availability check?
We use RDAP (Registration Data Access Protocol) which queries authoritative domain registries directly. This provides the most accurate and up-to-date availability information possible.
Which TLDs can I check?
DomScan supports over 1,500 TLDs including all popular extensions like .com, .net, .org, .io, .co, .dev, and many country-code TLDs. Use our /v1/coverage endpoint to see the full list.
Is there a rate limit?
The free plan includes generous rate limits. Cached results have no limit. Fresh RDAP lookups are throttled to protect upstream registries. Use prefer_cache=1 for best performance.
Can I check multiple domains at once?
Yes! Use the /v1/status/bulk endpoint to check multiple complete domain names in a single API request. Perfect for domain search tools.
Related Tools & Resources
HTTP Status Codes
We document the HTTP status codes you should handle so you can distinguish successful responses, auth issues, credits, rate limits, missing data, and upstream failures.
OK
200
Request successful
Bad Request
400
Invalid parameters
Payment Required
402
Not enough credits to run this request.
Too Many Requests
429
Rate limit exceeded
Server Error
500
Internal error
Bad Gateway
502
Upstream RDAP error
Service Unavailable
503
Upstream service unavailable or temporarily rate limited.
Gateway Timeout
504
Upstream lookup timed out.
Start Checking Domains for Free