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

Non-authoritative answer:
res.wx.qq.com	canonical name = reswx.tc.qq.com.
reswx.tc.qq.com	canonical name = jxt2rgi0.ovslegodl.sched.ovscdns.com.
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.48.139
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.135.174
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.175.170.163
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.159.77.253
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.2.78
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.180.110
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.134.132
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.2.144
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.159.77.250
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.48.140
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.136.87
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.2.73
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.183.80
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.159.79.166
Name:	jxt2rgi0.ovslegodl.sched.ovscdns.com
Address: 43.152.2.154