IP2WHOIS Information Lookup

API

Free WHOIS domain lookup API for development projects

Overview

The IP2WHOIS Information Lookup API is a RESTful service that retrieves comprehensive WHOIS domain data, including registrar details, creation/expiration dates, name servers, contact information, and domain status. Its primary endpoint accepts a domain name parameter (e.g., GET /v1/whois?domain=example.com) and returns JSON responses. Ideal for developers, it supports integrating domain validation into apps, building domain research tools, automating cybersecurity checks, or compliance monitoring. The free tier offers basic access with rate limits; paid plans unlock higher usage caps and bulk lookup features. It’s easy to integrate, making it suitable for small tools and enterprise applications alike.

Example Integration (JavaScript)

script.js JS


fetch('https://www.ip2whois.com/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful Interface
JSON Response Format
Comprehensive WHOIS Data
No API Key (Free Tier)
Multiple TLD Support

Frequently Asked Questions

? Is IP2WHOIS Information Lookup free to use?

Yes, the basic plan offers free access with rate limits. Paid plans are available for higher usage and advanced features like bulk lookups.

? Does it require an API Key?

The free tier typically does not require an API key, but paid plans use API keys for authentication and usage tracking.

? What is the response format?

All responses are in JSON format, including details like registrar info, domain dates, name servers, and contact data.

Top Alternatives

WhoisXML API Search Google

DomainTools API Search Google

Tool Info

Pricing Free

Category Development

Platform Public API

Pros

⊕ Easy Integration
⊕ Detailed Domain Data
⊕ Free Basic Access
⊕ Fast Response Times

Cons

⊖ Rate-Limited Free Tier
⊖ Advanced Features Require Payment
⊖ No SLA for Free Usage