Information about .arpa

Nameservers

NameserverAAAAA
a.root-servers.net
b.root-servers.net
c.root-servers.net
d.root-servers.net
e.root-servers.net
f.root-servers.net
g.root-servers.net
h.root-servers.net
i.root-servers.net
k.root-servers.net
l.root-servers.net
m.root-servers.net

More detailed DNS data can be found from here.