Figure 5: The delegation of sub-domains within sinag.com (/etc/named.sinag.data)

;
eng.sinag.com.          IN      NS      host.eng.sinag.com.
host.eng.sinag.com.     IN      A       164.120.38.3
;
chq.sinag.com.          IN      NS      draco.chq.sinag.com.
draco.chq.sinag.com.    IN      A       164.120.32.21
;
research.sinag.com.     IN      NS      madman.research.sinag.com.
madman.research.sinag.com. IN   A       164.120.40.3
;