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
131.in-addr.arpa.
These servers manage the 131.in-addr.arpa zone
all servers delegate to
183.72.131.in-addr.arpa.
These servers manage the 183.72.131.in-addr.arpa zone