| step | query | auth | servers |
| 1 | 173.140.251.205.in-addr.arpa. | . | (m,k,l,d,b,a,i,c,f,g,j,e,h).root-servers.net. |
| 2 | 173.140.251.205.in-addr.arpa. | in-addr.arpa. | (f,b,d,e,c,a).in-addr-servers.arpa. |
| 3 | 173.140.251.205.in-addr.arpa. | 205.in-addr.arpa. | (v,w,x,r,z,y,u,t).arin.net. |
| 4 | 173.140.251.205.in-addr.arpa. | 140.251.205.in-addr.arpa. | (dns1,dns2).gnax.net. |
We pick