🌐

WHOIS Lookup API

Query WHOIS records for any domain. Get registrar, registration dates, expiration, nameservers, and available contact information.

Get Free API Key View Documentation

API Endpoint

POST /v1/whois

Parameters

Name Type Required Description
domainstringYesDomain name to look up (e.g., example.com)

Quick Example

curl -X POST "https://api.toolcenter.dev/v1/whois" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domain": "google.com"}'

Features

  • Complete WHOIS record data
  • Registration and expiration dates
  • Registrar and nameserver info
  • Domain age calculation
  • Support for all major TLDs

Use Cases

Check domain availability and age

Monitor domain expiration dates

Investigate suspicious domains

Build domain research tools

Start Using WHOIS Lookup API for Free

500 free API calls per month. No credit card required.

Get Started Free