| step | query | auth | servers |
| 1 | 139.45.192.15.in-addr.arpa. | . | (h,d,k,j,f,m,a,i,b,e,l,c,g).root-servers.net. |
| 2 | 139.45.192.15.in-addr.arpa. | in-addr.arpa. | (d,e,a,c,b,f).in-addr-servers.arpa. |
| 3 | 139.45.192.15.in-addr.arpa. | 15.in-addr.arpa. | (ns3,ns1,ns5,ns4,ns2,ns6).hp.net. |
We pick