Domain Availability | Safe and fast queries | WhoisXML API

Check domain availability with our products

Check if any domain name can be registered or not. Sign up for a user account and enjoy your first 100 queries free of charge.

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100 free API requests monthly. No credit card required.

Our domain availability product line includes:


An immediate way to check if you can register a domain name.

Domain Availability Lookup | WhoisXML API
Domain Availability API | WhoisXML API


Domain Availability API can be integrated into existing software and offers market-leading accuracy when checking domain availability at scale via API calls. 100 complimentary queries are provided free of charge when signing up for a new developer account.


  • Establish whether or not domains are available to be registered in the most convenient way for you.

  • Our API results are available in both JSON and XML. Our lookup reports are straightforward and shareable.

  • Both our API and lookup versions cover an extensive selection of TLDs.

  • Our WHOIS data is updated daily and accurate for both Domain Availability Lookup and API.

Domain Availability Overview | WhoisXML API

Get 100 free API credits. No credit card required.

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