The first Docunext Labs tool includes a simple recreation of an old Docunext online tool: online dig.
Not everyone will know what "dig" refers to, so I'll explain that it refers to the querying of a domain name through public name servers to identify its corresponding IP address. This functionality is also available from the "nslookup" and "host" tools.
Checkout this example which views the IP addresses which correspond to "www.docunext.com":
http://www.labs.docunext.com/demo/doculabsappone/tools/dig/www.docunext.com.html