shell:$ nslookup -timeout=2 -retry=1 'th.jd.com' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: th.jd.com canonical name = ym.gslb.qianxun.com. Name: ym.gslb.qianxun.com Address: 111.13.28.191