| step | query | auth | servers |
| 1 | 7.1.168.192.in-addr.arpa. | . | (i,d,a,h,f,b,e,c,l,g,m,k,j).root-servers.net. |
| 2 | 7.1.168.192.in-addr.arpa. | in-addr.arpa. | (f,c,a,e,d,b).in-addr-servers.arpa. |
| 3 | 7.1.168.192.in-addr.arpa. | 192.in-addr.arpa. | (y,t,r,w,v,x,u,z).arin.net. |
| 4 | 7.1.168.192.in-addr.arpa. | 168.192.in-addr.arpa. | (blackhole-2,blackhole-1).iana.org. |
We pick