Linux
Go to terminal
ping <website name>
then you will get a reply with ip address and sever details of website.
Example:
smarttips@sijo-System-Product-Name:~$ ping smarttips.in
64 bytes from server1.greenfoss.com (178.79.145.85): icmp_req=1 ttl=55 time=165 ms
windows
Got to start window
take run ->cmd
c:> ping smarttips.in
64 bytes from server1.greenfoss.com (178.79.145.85): icmp_req=2 ttl=55 time=165 ms