shell:$ nslookup -timeout=2 -retry=1 'www.163.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
www.163.com	canonical name = www.163.com.163jiasu.com.
www.163.com.163jiasu.com	canonical name = www.163.com.w.kunluncan.com.
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.230
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.226
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.228
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.224
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.231
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.227
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.229
Name:	www.163.com.w.kunluncan.com
Address: 8.25.82.225