Name Resolution Tools

nslookup - available on all 3 OS; A basic use of nslookup is pretty simple. ​You execute the nslookup command ​with the host name following it, ​and the output displays what server was ​used to perform the request and the resolution result.

set debug - This will allow the tool to ​display the full response packets, ​including any intermediary requests ​and all of their contents.