shell:$ nslookup -timeout=2 -retry=1 'cursos.uo.edu.cu'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
cursos.uo.edu.cu	canonical name = proxy-inv-inet.uo.edu.cu.
Name:	proxy-inv-inet.uo.edu.cu
Address: 200.55.162.203