shell:$ nslookup -timeout=2 -retry=1 'pan.baidu.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:
pan.baidu.com	canonical name = yiyun.n.shifen.com.
yiyun.n.shifen.com	canonical name = yiyun.wshifen.com.
yiyun.wshifen.com	canonical name = pan.baidu.com.a.bdydns.com.
pan.baidu.com.a.bdydns.com	canonical name = opencdnbdglobal.jomodns.com.
opencdnbdglobal.jomodns.com	canonical name = opencdnbdglobal.gshifen.com.
Name:	opencdnbdglobal.gshifen.com
Address: 104.193.90.94