shell:$ nslookup -timeout=2 -retry=1 'gprs.oi.com.br'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
gprs.oi.com.br	canonical name = oi.com.br.
Name:	oi.com.br
Address: 187.6.211.40