| step | query | auth | servers |
| 1 | 151.232.167.72.in-addr.arpa. | . | (m,f,g,l,e,i,h,k,a,d,b,c,j).root-servers.net. |
| 2 | 151.232.167.72.in-addr.arpa. | in-addr.arpa. | (d,c,f,b,a,e).in-addr-servers.arpa. |
| 3 | 151.232.167.72.in-addr.arpa. | 72.in-addr.arpa. | (v,u,z,t,w,x,r,y).arin.net. |
| 4 | 151.232.167.72.in-addr.arpa. | 167.72.in-addr.arpa. | (cns2,cns1).secureserver.net. |
We pick