The nslookup Utility
The nslookup utility allows you to find the server name when you have an IP address, and vice-versa. You can run this utility on Windows command prompt. To do this, type the nslookup and press Enter key. After this, the command prompt change from C:/ to > as well as the name and IP address of the default DNS server gets displayed. The syntax of nslookup is:
nslookup