WhoisXML API

Domain Availability API

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Free Tier

Domain availability via API calls

Instantly know which domains can be purchased. This product is ideal for companies looking to expand their online portfolios or domainers seeking the most lucrative investments.

Benefits

  • Checks domain availability for registration.
  • Obtain results in the format of your choice—Extensible Markup Language (XML) or JavaScript Object Notation (JSON).
  • This API works for nearly all top-level domains (TLDs).
  • A connection to a WHOIS database that is updated daily ensures that you get the latest information.

Practical usage

Domain name research Registrars and domainers use our tool to find out if domains are available for registration.

SEO optimization Check the availability of recently expired domains, which have some traffic on them.

Domain Availability API Pricing

Pricing and Rate-Limit info.

$0 /mo

  • 100Requests/month

$9 /mo

  • 1,000Requests/month

$149 /mo

  • 50,000Requests/month

$1790 /mo

  • 2,500,000Requests/month

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