Some DNS stuff...
DNS Recursive requests
Where did my packet go?
$ nslookup -q=mx <website>
???????
192.168.0.1 => 8.8.8.8 => X.root-servers.net => Authoritative server ==> ?
There are lots of different record types:
A: Get an IP address
$ dig @8.8.8.8 -t A www.google.com
; (1 server ...