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

Non-authoritative answer:
www.wifi.com	canonical name = idv0z5t.qiniudns.com.
idv0z5t.qiniudns.com	canonical name = global.w.kunlunar.qiniudns.com.
global.w.kunlunar.qiniudns.com	canonical name = globalcdnweb.qiniu.com.w.kunlunar.com.
Name:	globalcdnweb.qiniu.com.w.kunlunar.com
Address: 47.246.22.189
Name:	globalcdnweb.qiniu.com.w.kunlunar.com
Address: 2404:2280:1b5:0:3::6f