shell:$ nslookup -timeout=2 -retry=1 'open.wechat.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:
open.wechat.com	canonical name = mp.weixin.qq.com.
mp.weixin.qq.com	canonical name = mpv6.weixin.qq.com.
Name:	mpv6.weixin.qq.com
Address: 203.205.239.154
Name:	mpv6.weixin.qq.com
Address: 203.205.232.110
Name:	mpv6.weixin.qq.com
Address: 240d:c040:1:40::11d
Name:	mpv6.weixin.qq.com
Address: 240d:c040:0:40::116