shell:$ nslookup -timeout=2 -retry=1 'test.longdeinfo-china.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
test.longdeinfo-china.com	canonical name = www.speedtest.net.
www.speedtest.net	canonical name = www.speedtest.net.cdn.cloudflare.net.
Name:	www.speedtest.net.cdn.cloudflare.net
Address: 104.17.147.22
Name:	www.speedtest.net.cdn.cloudflare.net
Address: 104.17.148.22