| step | query | auth | servers |
| 1 | 120.224.125.74.in-addr.arpa. | . | (j,e,l,a,k,h,b,c,m,i,g,d,f).root-servers.net. |
| 2 | 120.224.125.74.in-addr.arpa. | in-addr.arpa. | (f,e,d,c,b,a).in-addr-servers.arpa. |
| 3 | 120.224.125.74.in-addr.arpa. | 74.in-addr.arpa. | (r,y,z,t,x,u,v,w).arin.net. |
| 4 | 120.224.125.74.in-addr.arpa. | 125.74.in-addr.arpa. | (ns4,ns2,ns3,ns1).google.com. |
We pick