# dig +trace www.redhat.com
.            7743 IN NS h.root-servers.net.
.            7743 IN NS i.root-servers.net.
.            7743 IN NS j.root-servers.net.
com.                    172800 IN NS l.gtld-servers.net.
com.                    172800 IN NS j.gtld-servers.net.
com.                    172800 IN NS b.gtld-servers.net.
redhat.com.             172800 IN NS ns2.redhat.com.
redhat.com.             172800 IN NS ns3.redhat.com.
redhat.com.             172800 IN NS ns1.redhat.com.
redhat.com.             172800 IN NS ns4.redhat.com.
www.redhat.com.         3600 IN CNAME ds-www.redhat.com.edgekey.net.