Root zone
These servers manage the DNS root zone
all servers delegate to
in-addr.arpa.
These servers manage the in-addr.arpa zone
all servers delegate to
194.in-addr.arpa.
These servers manage the 194.in-addr.arpa zone
all servers delegate to
203.194.in-addr.arpa.
These servers manage the 203.194.in-addr.arpa zone