Root zone
These servers manage the DNS root zone
in-addr.arpa.
These servers manage the in-addr.arpa zone
210.in-addr.arpa.
These servers manage the 210.in-addr.arpa zone
175.210.in-addr.arpa.
These servers manage the 175.210.in-addr.arpa zone
7.175.210.in-addr.arpa.
These servers manage the 7.175.210.in-addr.arpa zone
0.7.175.210.in-addr.arpa.
These servers manage the 0.7.175.210.in-addr.arpa zone