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
128.in-addr.arpa.
These servers manage the 128.in-addr.arpa zone
all servers delegate to
157.128.in-addr.arpa.
These servers manage the 157.128.in-addr.arpa zone