shell:$ nslookup -timeout=2 -retry=1 'www.kakao.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
www.kakao.com	canonical name = terms-public-s8rf160i.kgns3.com.
Name:	terms-public-s8rf160i.kgns3.com
Address: 121.53.93.60