We pick h.root-servers.net, one of the 13 root servers (1), and ask it about yahoo.lv and learn that lv is delegated to six name servers (2), so we ask sunic.sunet.se where we learn that yahoo.lv is delegated to three name servers, including ns5.yahoo.com (3), so we ask that one and get the following answer:
Yahoo.lv is a domain controlled by five domain name servers at yahoo.com. All five of them are on different IP networks. Incoming mail for yahoo.lv is handled by one mail server at yahoodns.net having a total of two IP numbers. Both are on different IP networks. Yahoo.lv has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.