Reverse DNS lookup

Reverse DNS lookup is the process of getting a hostname from an IP address v.s. getting the IP address from a hostname.  To accomplish this pass in the IP address that you want to lookup as an argument to the DnsRequest constructor.

Example

// create new DNS request performing reverse lookup on 66.94.230.47

DnsRequest request = new DnsRequest("ns1.west.cox.net","66.94.230.47");