Making requests | Documentation | Domain Availability API | Whois XML API

Making requests

Domain Availability API helps you check whether a domain name is available for registration quickly and accurately.

WhoisXmlApi.com provides RESTful APIs. It is designed for server-to-server communication between your system and the WhoisXmlApi.com network using standard HTTP or HTTPS protocols. Query responses are delivered in either XML or JSON format based on your requests which are made via GET method.

To get started you need a developer's account with WhoisXmlApi.com. Authentication is required each time in order to use the API. The first 500 domain name availability lookups are complimentary when you register for a free developer account.


GET https://domain-availability.whoisxmlapi.com/api/v1?apiKey=YOUR_API_KEY&domainName=google.com
It takes up to a minute to activate your account after the registration.

Input parameters

apiKey

Required. Get your personal API KEY on My products page.

domainName

Required. The target domain name.

mode

Optional. The default mode is the fastest, the DNS_AND_WHOIS mode is slower but more accurate.

Acceptable values: DNS_AND_WHOIS | DNS_ONLY

Default: DNS_ONLY

outputFormat

Optional. Response output format.

Acceptable values: JSON | XML

Default: JSON

Free access

After Sign Up you automatically get a free subscription plan limited to 500 queries per month.

Usage limits and requests throttling

The maximum number of requests per second is 30. In case that the limit is breached, your subsequent requests will be rejected until the next second.

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