shell:$ nslookup -timeout=2 -retry=1 'bksiazek.arte.usermd.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
bksiazek.arte.usermd.net	canonical name = arte.usermd.net.
Name:	arte.usermd.net
Address: 91.185.185.41