| step | query | auth | servers |
| 1 | 102.139.125.74.in-addr.arpa. | . | (g,j,h,m,b,c,e,k,f,a,i,l,d).root-servers.net. |
| 2 | 102.139.125.74.in-addr.arpa. | in-addr.arpa. | (f,a,d,c,b,e).in-addr-servers.arpa. |
| 3 | 102.139.125.74.in-addr.arpa. | 74.in-addr.arpa. | (w,v,x,r,t,z,u,y).arin.net. |
| 4 | 102.139.125.74.in-addr.arpa. | 125.74.in-addr.arpa. | (ns4,ns2,ns3,ns1).google.com. |
We pick