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Domain WHOIS Information Lookup API - Powerful Tool for Domain Research and Security

Domain WHOIS Information Lookup API — Powerful Tool for Domain Research and Security

What Is Domain WHOIS Information Lookup?

Every domain name on the internet is registered through a domain registrar. Behind each registration lies a WHOIS record — a publicly accessible dataset that includes information about the domain owner, registrar, creation and expiration dates, nameservers, and DNS status.

The GuGuData WHOIS Information Lookup API allows developers and businesses to query WHOIS data in real-time for any domain, helping with cybersecurity, domain management, and competitive research.

Why Use an API for WHOIS Lookup?

Manually checking WHOIS records through web tools can be slow and inconsistent. APIs, on the other hand, provide automated and standardized access to domain registration data, enabling real-time integrations in apps, dashboards, and monitoring systems.

The GuGuData WHOIS API offers:

  • Instant WHOIS lookups for any domain (e.g., google.com, example.org)
  • Detailed registrar, organization, and contact info
  • Accurate creation, expiration, and updated timestamps
  • Full nameserver and DNSSEC details
  • Reliable uptime with multi-node CDN and HTTPS (TLS 1.0–1.3) support

Key Features of the GuGuData WHOIS API

  1. Comprehensive Domain Information — Get complete WHOIS data including registrar, creation/expiration dates, and domain status.
  2. Nameserver & DNS Insights — Identify nameservers and DNSSEC configurations for enhanced security tracking.
  3. Contact & Organization Details — Access registrant organization, country, and email addresses when available.
  4. Ultra-Fast Global Network — Powered by nationwide CDN and load-balanced servers for ultra-low latency responses.
  5. Secure by Design — Fully HTTPS-compliant, Apple ATS-compatible, and optimized for enterprise security.

Example API Endpoint

Base URL:

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

Request Method:

GET

Example Request:

https://api.gugudata.io/v1/websitetools/whois?appkey=YOUR_APPKEY&domain=google.com
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Demo URL:

👉 Try the demo here

Parameters:
| Parameter | Type | Required | Description |
|------------|------|-----------|--------------|
| appkey | string | ✅ Yes | Your GuGuData API key (from developer center) |
| domain | string | ✅ Yes | The domain to look up (e.g., google.com) |

Sample Response (Simplified) 

{
  "dataStatus": {
    "statusCode": 200,
    "status": "success",
    "responseDateTime": "2024-12-20T00:00:00Z"
  },
  "data": {
    "domain_name": ["google.com"],
    "registrar": "MarkMonitor Inc.",
    "creation_date": ["1997-09-15"],
    "expiration_date": ["2030-09-14"],
    "name_servers": ["ns1.google.com", "ns2.google.com"],
    "status": ["active"],
    "org": "Google LLC",
    "country": "US",
    "dnssec": "unsigned"
  }
}
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Common Error Codes

Code Description Meaning
200 Normal return WHOIS information retrieved successfully
400 Parameter error Invalid or missing parameters
429 Rate limit Exceeded 100 requests per second
403 Account in arrears Payment required
402 APPKEY error Invalid or missing APPKEY
500 API error Internal WHOIS lookup issue
503 Service unavailable Temporary service downtime

Use Cases

  • Cybersecurity monitoring — Detect domain spoofing or phishing domains.
  • Domain research & acquisition — Analyze ownership and expiration patterns.
  • Compliance & auditing — Verify domain registration details for corporate assets.
  • SEO and marketing — Track competitor domains and DNS changes.

Pricing & Access

The GuGuData WHOIS Lookup API is a paid API service priced at $99, with a discounted launch offer of $49.

Each request provides detailed, structured WHOIS information with enterprise reliability and developer-friendly JSON formatting.

Start your integration in minutes with full HTTPS support and global endpoint access.

Conclusion

If you need accurate, fast, and developer-ready WHOIS data, the GuGuData Domain WHOIS Information Lookup API is a powerful choice.

Whether you’re building domain monitoring tools, research dashboards, or cybersecurity systems — this API provides everything you need in one secure, scalable endpoint.

👉 Try it now: https://api.gugudata.io/v1/websitetools/whois/demo

📘 Learn more: https://www.gugudata.com

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