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
91.in-addr.arpa.
These servers manage the 91.in-addr.arpa zone
all servers delegate to
90.216.91.in-addr.arpa.
These servers manage the 90.216.91.in-addr.arpa zone