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
4.in-addr.arpa.
These servers manage the 4.in-addr.arpa zone
all servers delegate to
78.4.in-addr.arpa.
These servers manage the 78.4.in-addr.arpa zone