| step | query | auth | servers |
| 1 | 18.51.55.69.in-addr.arpa. | . | (l,j,e,c,d,g,f,i,h,k,b,a,m).root-servers.net. |
| 2 | 18.51.55.69.in-addr.arpa. | in-addr.arpa. | (d,a,c,b,e,f).in-addr-servers.arpa. |
| 3 | 18.51.55.69.in-addr.arpa. | 69.in-addr.arpa. | (r,x,w,u,v,z,y,t).arin.net. |
| 4 | 18.51.55.69.in-addr.arpa. | 51.55.69.in-addr.arpa. | (ns3,ns4,ns2,ns1).serverstack.com. |
We pick