shell:$ nslookup -timeout=2 -retry=1 '103.242.99.17.com'
;; communications error to 75.98.161.224#53: timed out
Server:		69.39.86.5
Address:	69.39.86.5#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