Fzo.org.mk is a domain controlled by two domain name servers at com.mk. Both are on the same IP network. The primary name server is...
http://www.robtex.com/dns/fzo.org.mk.html
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about drg.fzo.org.mk and learn that mk is delegated to four name servers (2), so we ask rip.psg ...
http://dnstree.com/mk/org/fzo/drg/
Site analysis for www.fzo.org.mk ... Site Information for www.fzo.org.mk Mail records: mail.fzo.org.mk (Weight 10)
http://gd-analytics.com/www.fzo.org.mk