API features

Domain registration lookup

Look up WHOIS registration details for a domain and use them in monitoring, support, or ownership review workflows.

Registrar and nameserver fields

Return registrar, status, nameserver, creation, and expiry fields when the upstream data source provides them.

Domain expiry monitoring

Use expiry and registration dates to detect renewal risk for owned domains, customer domains, or watched assets.

Security and operations review

Support incident review, onboarding checks, domain portfolio audits, and suspicious-domain investigation workflows.

Structured output for dashboards

Use normalized WHOIS fields in admin panels, asset inventories, compliance reports, and scheduled monitoring jobs.

Standalone WHOIS interface

Buy this API independently when your workflow needs registration data rather than DNS, SSL, or geolocation checks.

API Document

HTTP Protocol:HTTPS

HTTP Method:GET

HTTP Endpoint:https://api.gugudata.io/v1/websitetools/whois

Response Type:application/json; charset=utf-8

DEMO Endpoint:https://api.gugudata.io/v1/websitetools/whois/demo

Live Demo:Try Interactive Demo

Postman Collection:Run in Postman

API Request Parameters

Name	Type	Is Required	Default Value	Remark
appkey	string	true	YOUR_APPKEY	API key used to authenticate the request.
domain	string	true		Domain name or HTTPS origin to inspect.

API Response Parameters

Name	Type	Remark
dataStatus.requestParameter	string	Privacy-safe summary of the normalized request.
dataStatus.statusCode	integer	Application-level status code.
dataStatus.status	string	Application-level result status.
dataStatus.statusDescription	string	Human-readable application status message.
dataStatus.responseDateTime	string	Time at which the response was generated.
dataStatus.dataTotalCount	integer	Number of matching or returned records for this request.
data.domain_name	array<string>	Domain name(s) found in WHOIS record.
data.registrar	string	Domain registrar information.
data.creation_date	array<string>	Domain creation date(s).
data.expiration_date	array<string>	Domain expiration date(s).
data.updated_date	array<string>	Domain last update date(s).
data.name_servers	array<string>	Domain nameservers.
data.status	array<string>	Domain status information.
data.org	string	Organization name.
data.country	string	Country code.
data.emails	array<string>	Contact email addresses.
data.dnssec	string	DNSSEC status.

API Response Status Codes

Status Code	Explanation of Status Code	Remarks
200	Request processed successfully.	Some endpoints expose a separate application-level status field in the response body, such as `dataStatus.statusCode`.
400	Invalid request parameters or request format.	Check required fields, data types, and request body format.
401	Missing or unknown application key.	Provide a valid `appkey` with the request.
403	The application key is recognized but access is not allowed.	The key may be expired, inactive, or not permitted for the requested API.
429	Request rate or trial usage limit exceeded.	Reduce request frequency and retry with backoff. If a trial allowance is exhausted, check Trial Keys for remaining requests and subscribe to continue.
500	Internal service error.	Retry later or contact support if the error persists.
503	Upstream service unavailable.	Retry later; the requested upstream dependency is temporarily unavailable.

Remote MCP

AI client access

Use this API through GuGuData Remote MCP

Connect your AI client once, authorize in the browser, and the client can use the GuGuData API tools available to your account. You do not need to paste an appkey into the MCP client.

Endpoint https://mcp.gugudata.io/mcp

Open MCP Guide

Generic MCP configuration

{
  "mcpServers": {
    "gugudata": {
      "url": "https://mcp.gugudata.io/mcp",
      "transportType": "streamable-http"
    }
  }
}

Code Snippets

Run in Postman Open LLM Page

Frequently asked questions

Common questions about request limits, trials, renewal, and cancellation.

What does the 5 requests per second limit mean?

It is a request-rate limit, not a concurrency allowance. Keep your request rate at or below 5 per second. If the service returns a rate-limit response, reduce the frequency and retry with backoff.

Is total paid usage limited?

There is no total request cap during an active paid subscription and no usage-based overage charge.

How does the free trial work?

Each account can receive a limited trial key. Requests are shared across APIs in the same category. Check Trial Keys for the exact allowance and remaining requests.

How do renewal and cancellation work?

The plan renews annually until canceled. Manage or cancel the renewal from Dashboard → Orders & Billing. Access continues through the paid period after cancellation. See the Terms of Service for the current refund policy. If the billing portal is unavailable, contact support.

Technical support

Need help choosing an API or getting started?

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Service terms

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