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
192.in-addr.arpa.
These servers manage the 192.in-addr.arpa zone
all servers delegate to
71.192.in-addr.arpa.
These servers manage the 71.192.in-addr.arpa zone