shell:$ nslookup -timeout=2 -retry=1 'help.naver.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
help.naver.com	canonical name = help.naver.com.nheos.com.
Name:	help.naver.com.nheos.com
Address: 61.247.192.235
Name:	help.naver.com.nheos.com
Address: 61.247.194.59
Name:	help.naver.com.nheos.com
Address: 125.209.233.25
Name:	help.naver.com.nheos.com
Address: 125.209.233.17