| step | query | auth | servers |
| 1 | 102.201.91.77.in-addr.arpa. | . | (e,g,d,m,c,i,h,k,j,b,f,a,l).root-servers.net. |
| 2 | 102.201.91.77.in-addr.arpa. | in-addr.arpa. | (a,f,d,e,c,b).in-addr-servers.arpa. |
| 3 | 102.201.91.77.in-addr.arpa. | 77.in-addr.arpa. | tinnie.arin.net. sec1.apnic.net. pri.authdns.ripe.net. sec3.apnic.net. sns-pb.isc.org. ns3.nic.fr. |
| 4 | 102.201.91.77.in-addr.arpa. | 201.91.77.in-addr.arpa. | (dns2,dns1).servidorpt.com. |
We pick