| step | query | auth | servers |
| 1 | 200.0.168.192.in-addr.arpa. | . | (m,e,l,j,a,b,h,f,c,g,k,d,i).root-servers.net. |
| 2 | 200.0.168.192.in-addr.arpa. | in-addr.arpa. | (d,f,a,e,b,c).in-addr-servers.arpa. |
| 3 | 200.0.168.192.in-addr.arpa. | 192.in-addr.arpa. | (u,v,y,r,w,z,x,t).arin.net. |
| 4 | 200.0.168.192.in-addr.arpa. | 168.192.in-addr.arpa. | (blackhole-2,blackhole-1).iana.org. |
We pick