Answer
'nslookup' is a tool designed to look up names on the DNS server to find the domain or IP address of a particular host.
Explanation
The name 'nslookup' stands for “name server look up.” It is a command-line tool, which is used to find the IP address that corresponds to a host, or the domain name that corresponds to an IP address also known as 'Reverse DNS Lookup'.
Steps
To find the IP address of a host e.g. xyz
Type: nslookup xzy at the command prompt of your windows.
Press: Enter.