| step | query | auth | servers |
| 1 | 1.6.168.192.in-addr.arpa. | . | (e,d,j,m,c,g,h,f,k,a,b,i,l).root-servers.net. |
| 2 | 1.6.168.192.in-addr.arpa. | in-addr.arpa. | (f,b,e,c,d,a).in-addr-servers.arpa. |
| 3 | 1.6.168.192.in-addr.arpa. | 192.in-addr.arpa. | (t,y,z,v,r,x,w,u).arin.net. |
| 4 | 1.6.168.192.in-addr.arpa. | 168.192.in-addr.arpa. | (blackhole-2,blackhole-1).iana.org. |
We pick