Domain WHOIS API

This API allows users to look up detailed information about domains, including age, registrar, creation and expiry dates, and nameservers. It returns clean JSON data suitable for various applications such as threat intelligence and due diligence, with no authentication required for the free tier.

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AuthHTTPSNo CORSSecurity

Verified today: 100% uptime

API key

Unconfirmed

HTTPS

Supported

Browser calls

No, needs a proxy

Status

Live · 95/100

Overview & Architectural Role

Domain WHOIS API provides programmatic access to this api allows users to look up detailed information about domains, including age, registrar, creation and expiry dates, and nameservers. it returns clean json data suitable for various applications such as threat intelligence and due diligence, with no authentication required for the free tier. Delivered over secure HTTPS protocols, it exposes structured endpoints designed to integrate cleanly into modern frontend frameworks, backend microservices, and automated data pipelines without requiring local database provisioning.

Who it is built for

Engineers building web dashboards, mobile applications, CLI utilities, or background cron workers in need of reliable security data feeds.

Architectural Advantage

Consuming Domain WHOIS API removes the operational overhead of running custom scrapers, orchestrating headless browser fleets, or manually seeding and maintaining a local database. Instead of reverse-engineering volatile DOM layouts or dealing with anti-bot IP blocks, your application connects directly to a standardized JSON interface designed for backend ingestion with consistent schema schemas. Dedicated authentication ensures rate quotas and credential tracking per project environment.

What our checks found

Health score: 95/100
Reliability: 100%
Average latency: 483ms

Last checked 2026-10-24. Measured independently, not self-reported by the provider.

Core Use Cases & Architecture Ideas

Practical real-world patterns for integrating Domain WHOIS API into software systems.

Automated SaaS Feature Integration

Embed data and functionality from Domain WHOIS API directly into application onboarding, profile enrichment, or reporting dashboards.

Architecture: Backend service worker fetches Domain WHOIS API during user workflows, caches responses in Redis, and hydrates UI state.

Scheduled Reporting & Monitoring Bot

Periodically extract updates from Domain WHOIS API to generate daily digests, analytics reports, or Slack notifications.

Architecture: A scheduled GitHub Action or cron worker executes a lightweight script calling Domain WHOIS API, formatting markdown summaries for stakeholders.

Rapid Prototyping & Hackathon Showcase

Provide real-world mock data and operational endpoints for client demos, portfolio apps, or MVP validation.

Architecture: Static client SPA queries Domain WHOIS API directly to populate mock dashboards, graphs, and interactive UI states without a custom backend.

Code Implementation Examples

Production-ready starting templates with error handling for Domain WHOIS API.

// Authentication requirement is unconfirmed. Check the documentation before relying on this.
// Modern native fetch with error handling
async function callApi() {
  try {
    const response = await fetch('https://kiprio.com/api/v1/resource', {
      method: 'GET',
    headers: {
      'Authorization': 'Bearer YOUR_TOKEN',
      Accept: 'application/json',
    },
    });

    if (!response.ok) {
      throw new Error(`HTTP ${response.status}: ${response.statusText}`);
    }

    const data = await response.json();
    console.log('Response payload:', data);
    return data;
  } catch (error) {
    console.error('API request failed:', error);
    throw error;
  }
}

// callApi();

This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.

Response Payload & Live Testing

Inspect the expected JSON structure returned by Domain WHOIS API.

Expected JSON Response Payload

Authentic sample payload structure to evaluate schema attributes before integration.

{
  "status": 200,
  "api": "Domain WHOIS API",
  "endpoint": "/domain-whois-api",
  "data": {
    "id": 101,
    "title": "Domain WHOIS API Sample Payload",
    "description": "This API allows users to look up detailed information about domains, including age, registrar, creation and expiry dates, and nameservers. It returns clean JSON data suitable for various applications such as threat intelligence and due diligence, with no authentication required for the free tier.",
    "verified": true,
    "category": "Security",
    "updated_at": "2026-10-24T07:39:14.547Z"
  },
  "meta": {
    "response_time_ms": 483,
    "cached": false
  }
}

Format: application/json

Integration Considerations & Best Practices

Technical factors to keep in mind when integrating Domain WHOIS API into production environments.

Implement In-Memory or Edge Caching

Avoid triggering rate limits on public feeds by caching response payloads in Redis, Vercel KV, or standard HTTP Cache-Control headers with a 5-to-15 minute TTL.

Zero-Credential Environment Protection

While no API key is required, public keyless pools often share global rate limits. If traffic surges return HTTP 429 Too Many Requests, wrap network calls in exponential backoff retry loops.

CORS Proxy Required for Browser Frontend Calls

This API does not send Access-Control-Allow-Origin response headers. Direct fetch() calls from browser JavaScript will fail due to Same-Origin Policy. Route your calls through a server backend or lightweight edge proxy.

Validate HTTP Status Before Parsing JSON

Always inspect response.ok before executing response.json(). Upstream services returning 4xx or 502 Bad Gateway often serve HTML error pages, which cause syntax errors when parsed as JSON.

Where this listing comes from

FishFish is an automated service designed to quickly detect and mitigate phishing threats before they can be exploited for malicious purposes. It provides a streamlined solution for identifying harmful resources efficiently.

No keyCORSHTTPS

Verified today: 100% uptime

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Domain WHOIS API — common questions

Answered from what our own scheduled checks found, not from the provider's marketing.

Is Domain WHOIS API free to use?

Domain WHOIS API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.

Does Domain WHOIS API need an API key?

Domain WHOIS API requires some form of authentication. Check the provider's documentation for which scheme it expects.

Can I call Domain WHOIS API from browser JavaScript?

Not directly. Domain WHOIS API did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.

Is Domain WHOIS API still working?

Yes, as of 2026-10-24. Our automated check reached Domain WHOIS API and recorded a 100% reliability score with a median response time of 483 ms. We re-check on a schedule, and this page updates with the result.

Is Domain WHOIS API available over HTTPS?

Yes. Domain WHOIS API serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.