| step | query | auth | servers |
| 1 | 250.163.18.67.in-addr.arpa. | . | (h,k,j,f,d,g,c,e,a,m,l,b,i).root-servers.net. |
| 2 | 250.163.18.67.in-addr.arpa. | in-addr.arpa. | (d,e,f,b,c,a).in-addr-servers.arpa. |
| 3 | 250.163.18.67.in-addr.arpa. | 67.in-addr.arpa. | (v,r,t,u,x,z,y,w).arin.net. |
| 4 | 250.163.18.67.in-addr.arpa. | 18.67.in-addr.arpa. | (ns3,ns4).arpa.networklayer.com. |
We pick