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
27.in-addr.arpa.
These servers manage the 27.in-addr.arpa zone
all servers delegate to
71.27.in-addr.arpa.
These servers manage the 71.27.in-addr.arpa zone