We pick b.root-servers.net, one of the 13 root servers (1), and ask it about www.esgrum.armada.mil.ec and learn that ec is delegated to four name servers (2), so we ask n2.nic.ec where we learn that armada.mil.ec is delegated to two name servers, including orion1.armada.mil.ec (3), so we ask that one where we see a CNAME from www.esgrum.armada.mil.ec to esgrum.armada.mil.ec, so we have to start all over again. We already know that dns01.armada.mil.ec is authoritative for armada.mil.ec (4) and ask it about esgrum.armada.mil.ec and get the following answer: