| step | query | auth | servers |
| 1 | 50.22.138.151.in-addr.arpa. | . | (l,d,k,c,m,h,b,e,f,a,j,i,g).root-servers.net. |
| 2 | 50.22.138.151.in-addr.arpa. | in-addr.arpa. | (e,b,a,f,d,c).in-addr-servers.arpa. |
| 3 | 50.22.138.151.in-addr.arpa. | 151.in-addr.arpa. | sec3.apnic.net. sec1.apnic.net. sns-pb.isc.org. pri.authdns.ripe.net. tinnie.arin.net. ns3.nic.fr. |
| 4 | 50.22.138.151.in-addr.arpa. | 138.151.in-addr.arpa. | (ns1,ns).superpages.com. |
We pick