| step | query | auth | servers |
| 1 | 253.60.168.192.in-addr.arpa. | . | (b,g,h,c,j,f,d,k,l,m,i,e,a).root-servers.net. |
| 2 | 253.60.168.192.in-addr.arpa. | in-addr.arpa. | (b,a,c,f,e,d).in-addr-servers.arpa. |
| 3 | 253.60.168.192.in-addr.arpa. | 192.in-addr.arpa. | (u,r,t,z,w,y,v,x).arin.net. |
| 4 | 253.60.168.192.in-addr.arpa. | 168.192.in-addr.arpa. | (blackhole-2,blackhole-1).iana.org. |
We pick