| step | query | auth | servers |
|---|
| 1 | 102.181.247.77.in-addr.arpa. | . | (l,b,m,c,f,j,d,k,h,a,i,e,g).root-servers.net. |
| 2 | 102.181.247.77.in-addr.arpa. | in-addr.arpa. | (b,e,a,c,d,f).in-addr-servers.arpa. |
| 3 | 102.181.247.77.in-addr.arpa. | 77.in-addr.arpa. | tinnie.arin.net. ns3.nic.fr. sec3.apnic.net. sns-pb.isc.org. pri.authdns.ripe.net. sec1.apnic.net. |
| 4 | 102.181.247.77.in-addr.arpa. | 181.247.77.in-addr.arpa. | ns2.dbn.nforce.nl. ns3.nforce.com. ns1.dbn.nforce.nl. |
We pick 
