shell:$ nslookup -timeout=2 -retry=1 'class.101.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
class.101.com	canonical name = newcms-html-images-101.101.com.
Name:	newcms-html-images-101.101.com
Address: 14.103.151.185