We pick l.root-servers.net, one of the 13 root servers (1), and ask it about baixa.ki and learn that ki is delegated to nine name servers (2), so we ask sec1.apnic.net where we learn that baixa.ki is delegated to two name servers, including ns2.nzs.com.br (3), so we ask that one and get the following answer:
Baixa.ki is a domain controlled by four domain name servers at nzs.com.br. All four of them are on the same IP network. Incoming mail for baixa.ki is handled by one mail server at baixa.ki themselves having a total of two IP numbers. Both are on different IP networks. Baixa.ki has two IP numbers (18.104.22.168, 22.214.171.124). Both are on different IP networks.