nslookup issue

[vineethnnn]

when i type nslookup google.com in cmd i get the below error.

DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 2001:4860:4860::8888

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out