| step | query | auth | servers |
| 1 | 150.201.1.72.in-addr.arpa. | . | (d,j,h,l,c,e,b,f,k,g,i,a,m).root-servers.net. |
| 2 | 150.201.1.72.in-addr.arpa. | in-addr.arpa. | (b,c,e,a,d,f).in-addr-servers.arpa. |
| 3 | 150.201.1.72.in-addr.arpa. | 72.in-addr.arpa. | (w,z,x,t,u,r,y,v).arin.net. |
| 4 | 150.201.1.72.in-addr.arpa. | 201.1.72.in-addr.arpa. | (ns2,ns1).tel-ott.com. |
We pick