Check Domain Availability API

What you get

Check if a domain name is available across one or more TLDs.

SynchronousBulkRESTMCPSDKInteractive tool

Choose this product when

Who it is for

Use focused checks for a single decision or assemble a broader profile when context matters.

Choose this product when

Choose this for available, registered, or unknown status with supporting evidence. Availability does not guarantee registrability.

What you get

Check if a domain name is available across one or more TLDs.

Endpoints

Review the supported operations, inputs, outputs, execution modes, and response limits before integrating.

GET /v1/status View API reference

POST /v1/status/bulk View API reference

Credits and authentication

1 Authentication required. Check the operation reference for the exact cost and any per-item pricing.

Example operation

Use documented operations to collect, assess, enrich, verify, compare, protect, or monitor public evidence.

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=false"

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
  }
}

Limits and evidence boundaries

Unknown means the requested fact could not be determined from the available evidence.

Bulk operations process multiple supported inputs while preserving documented item-level outcomes.

Cached indicates that stored evidence was used; review freshness metadata where provided.

Evidence can change over time; use timestamps and freshness fields when provided.

An absence or unknown result does not prove that an identifier can be claimed or registered.

Reviewed 2026-08-22

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Frequently asked questions

Where can I find the Check Domain Availability request and response reference?

Use the API reference for Check Domain Availability to review parameters, response fields, examples, status codes, and supported operation modes.

How should I interpret unknown or incomplete results from Check Domain Availability?

Unknown or partial results mean that the requested evidence could not be fully determined. Keep the result state, confidence, freshness, and limitations in downstream decisions.

How is Check Domain Availability priced?

Pricing depends on the operation and execution mode. Check the endpoint reference for the current credit cost, authentication requirement, and per-item rules.