DNS delegation of 24.43 updated: May 21, 2013 7:00:38 AM
ns1.biz.rr.com. ns2.biz.rr.com. dns4.rr.com.
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about 43.24.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask a.in-addr-servers.arpa where we learn that 24.in-addr.arpa is delegated to eight name servers, including v.arin.net (3), so we ask that one and learn that 43.24.in-addr.arpa is delegated to three name servers (4), so we ask ns1.biz.rr.com and get the following answer: