shell:$ nslookup -timeout=2 -retry=1 '103.242.99.17.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
103.242.99.17.com	canonical name = all.17.com.w.kunluncan.com.
Name:	all.17.com.w.kunluncan.com
Address: 180.163.146.111