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API reference

Check Domain Availability API

Check if a domain name is available across one or more TLDs. Use this reference to choose an operation and integrate its documented response contract.

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Operations

GET /v1/status View API reference
POST /v1/status/bulk View API reference

GET /v1/status

Operation: checkDomainAvailability Credits and authentication: 1 Authentication required
GET /v1/status

Query Parameters

Parameter Type required
name string optional
tlds string optional
domain string optional
prefer_cache boolean
Default false
optional

Response Fields

Field Type
name string
results[] object[]
results[] object
results[].domain string
results[].tld string
results[].available boolean | null
results[].source string
results[].confidence string
results[].checked_at string
results[].latency_ms integer
results[].error string
confidence_summary object
confidence_summary.scope string
confidence_summary.requested_count integer
confidence_summary.result_count integer
confidence_summary.invalid_count integer
confidence_summary.available_count integer
confidence_summary.registered_count integer
confidence_summary.authoritative_count integer
confidence_summary.heuristic_count integer
confidence_summary.cached_count integer
confidence_summary.error_count integer
confidence_summary.ambiguous_count integer
confidence_summary.source_counts object
confidence_summary.primary_source string | null
confidence_summary.cache_status string
confidence_summary.rdap_calls integer
confidence_summary.refreshes integer
confidence_summary.cache_preference_misses integer
confidence_summary.fallback_chain[] string[]
confidence_summary.confidence_level string
confidence_summary.determinacy_rate number
confidence_summary.ambiguity_reason string | null
meta object
meta.total_checked integer
meta.available_count integer
meta.duration_ms integer

Example Request

curl -H "X-API-Key: $DOMSCAN_API_KEY" "https://domscan.net/v1/status?name=mycompany&tlds=com%2Cnet%2Corg%2Cio&domain=mycompany.com&prefer_cache=example.com"

Example Response

{
  "name": "mycompany",
  "results": [
    {
      "domain": "mycompany.com",
      "tld": "com",
      "available": false,
      "source": "rdap",
      "latency_ms": 45
    },
    {
      "domain": "mycompany.io",
      "tld": "io",
      "available": true,
      "source": "rdap",
      "latency_ms": 67
    }
  ],
  "meta": {
    "total_checked": 2,
    "available_count": 1,
    "duration_ms": 120
  }
}

POST /v1/status/bulk

Operation: bulkCheckDomains Credits and authentication: 1 Authentication required
POST /v1/status/bulk

Body Parameters

Parameter Type required
domains string[] required
prefer_cache boolean
Default false
optional

Response Fields

Field Type
results[] object[]
results[] object
results[].domain string
results[].tld string
results[].available boolean | null
results[].source string
results[].confidence string
results[].checked_at string
results[].latency_ms integer
results[].error string
confidence_summary object
confidence_summary.scope string
confidence_summary.requested_count integer
confidence_summary.result_count integer
confidence_summary.invalid_count integer
confidence_summary.available_count integer
confidence_summary.registered_count integer
confidence_summary.authoritative_count integer
confidence_summary.heuristic_count integer
confidence_summary.cached_count integer
confidence_summary.error_count integer
confidence_summary.ambiguous_count integer
confidence_summary.source_counts object
confidence_summary.primary_source string | null
confidence_summary.cache_status string
confidence_summary.rdap_calls integer
confidence_summary.refreshes integer
confidence_summary.cache_preference_misses integer
confidence_summary.fallback_chain[] string[]
confidence_summary.confidence_level string
confidence_summary.determinacy_rate number
confidence_summary.ambiguity_reason string | null
meta object
meta.total_checked integer
meta.available_count integer
meta.duration_ms integer

Example Request

curl -X POST "https://domscan.net/v1/status/bulk" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $DOMSCAN_API_KEY" \
  -d '{
  "domains": [
    "example.com",
    "startup.io",
    "brand.ai"
  ],
  "prefer_cache": false
}'

Example Response

{
  "results": [
    {
      "domain": "example.com",
      "tld": "com",
      "available": false,
      "source": "rdap",
      "latency_ms": 45
    },
    {
      "domain": "startup.io",
      "tld": "io",
      "available": true,
      "source": "rdap",
      "latency_ms": 67
    },
    {
      "domain": "brand.ai",
      "tld": "ai",
      "available": true,
      "source": "cache",
      "latency_ms": 2
    }
  ],
  "meta": {
    "total_checked": 3,
    "available_count": 2,
    "duration_ms": 120
  }
}

Reference resources

OpenAPI 3.0 Postman MCP