DomainTools API Guide: Name Server Report

The DomainTools API is organized into distinct products with queries that follow a REST-ful URL structure wherever possible. Each product offers free, un-authenticated access for the sample URLs listed with each product. If you haven't already, you may want to review the getting started document to learn about authentication and response formats.

The Name Server Domains API provides a list of domain names that share the same primary or secondary name server. You can request a name server directly, or you can provide a domain name and the API will provide the list of domain names pointed to the same name servers as those listed as the primary and secondary name servers on the domain name you requested.

  http://api.domaintools.com/v1/domaintools.net/name-server-domains/

  http://api.domaintools.com/v1/dailychanges.com/name-server-domains/
	

Important: Your API account will be charged per domain name returned in the response, not per domain or name server sent in the request. You will also be charged for duplicate requests, so we recommend building a caching layer on your side to avoid unnecessary charges.

Use the optional limit parameter to control the size of the result list, and therefore the price, of your query.

If the domain_count response node is greater than the count of elements in the domain_list node, your query has been limited to only the first set of domains on that IP address, listed alphabetically. The limit may come from your service level or the limit parameter you set in your request.

If you want to estimate the size of a query before incurring the charge on your account, make the request with the limit parameter set to zero (limit=0) and check the value of the domain_count node. You must not, however, use this technique as a replacement for the Domain Profile API to determine the number of domain names that share a common name server. We expect to see a reasonable ratio of estimates to actual data requests.