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

Non-authoritative answer:
www.vnet.com	canonical name = www.vnet.com.cdn.dnsv1.com.
www.vnet.com.cdn.dnsv1.com	canonical name = 76adqdei.slt.sched.tdnsv8.com.
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 1.56.98.184
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 175.43.23.215
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 42.56.64.131
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 221.204.209.225
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 60.13.97.57
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 42.56.81.77
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 116.169.183.220
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 221.204.15.51
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 116.162.168.167
Name:	76adqdei.slt.sched.tdnsv8.com
Address: 211.95.142.138
;; communications error to 75.98.161.224#53: timed out
;; communications error to 69.39.86.5#53: timed out
;; no servers could be reached