Making requests

GET https://reverse-ns.whoisxmlapi.com/api/v1?apiKey=YOUR_API_KEY&ns=ns2.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.

ns

Required. Name server.

from

Optional. The domain name which is used as an offset for the results returned.

Since every response is limited to 300 records, you can retrieve the next page by putting the last domain name from the response into this parameter. For example, if the last domain name in the response is test.com and the field "size" in the output equals 300, in order to retrieve the next page, call

https://reverse-ns.whoisxmlapi.com/api/v1?apiKey=YOUR_API_KEY&ns=ns2.google.com&from=test.com

If the parameter is omitted, you get arbitrary 300 records.

To get the first page, put 1 into the parameter.

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 100 DRS credits.

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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