shell:$ nslookup -timeout=2 -retry=1 'atendimento.vivo.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
atendimento.vivo.com	canonical name = slb-exvivoportal-web.vivo.com.
Name:	slb-exvivoportal-web.vivo.com
Address: 156.59.238.29