| step | query | auth | servers |
| 1 | 113.45.125.74.in-addr.arpa. | . | (a,c,f,h,d,g,m,b,l,k,e,i,j).root-servers.net. |
| 2 | 113.45.125.74.in-addr.arpa. | in-addr.arpa. | (a,f,c,b,d,e).in-addr-servers.arpa. |
| 3 | 113.45.125.74.in-addr.arpa. | 74.in-addr.arpa. | (v,z,t,u,w,y,r,x).arin.net. |
| 4 | 113.45.125.74.in-addr.arpa. | 125.74.in-addr.arpa. | (ns1,ns4,ns2,ns3).google.com. |
We pick