shell:$ nslookup -timeout=2 -retry=1 'dsum-sec.casalemedia.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	dsum-sec.casalemedia.com
Address: 104.18.26.193
Name:	dsum-sec.casalemedia.com
Address: 104.18.27.193