shell:$ nslookup -timeout=2 -retry=1 'smart.zoom.us'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
smart.zoom.us	canonical name = whs.sendergen.com.
whs.sendergen.com	canonical name = www-c0.sendergen.com.
www-c0.sendergen.com	canonical name = dal1-relay.sendergen.com.
Name:	dal1-relay.sendergen.com
Address: 144.168.44.234