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
72.in-addr.arpa.
These servers manage the 72.in-addr.arpa zone
all servers delegate to
116.52.72.in-addr.arpa.
These servers manage the 116.52.72.in-addr.arpa zone