We pick m.root-servers.net, one of the 13 root servers (1), and ask it about institutolamerced.com.ar and learn that ar is delegated to five name servers (2), so we ask relay1.mecon.gov.ar where we learn that institutolamerced.com.ar is delegated to two name servers, including ns2.unlugar.com (3), so we ask that one and get the following answer: