We pick g.root-servers.net, one of the 13 root servers (1), and ask it about lajornadasanluis.com and learn that com is delegated to 13 name servers (2), so we ask g.gtld-servers.net where we learn that lajornadasanluis.com is delegated to two name servers, including ns3.unam.mx (3), so we ask that one and get the following answer:
Lajornadasanluis.com is a domain controlled by five domain name servers at unam.mx having a total of six IP numbers. Some of them are on the same IP network.