| step | query | auth | servers |
| 1 | 135.72.55.65.in-addr.arpa. | . | (b,g,k,f,l,d,m,i,j,h,c,a,e).root-servers.net. |
| 2 | 135.72.55.65.in-addr.arpa. | in-addr.arpa. | (b,d,e,c,a,f).in-addr-servers.arpa. |
| 3 | 135.72.55.65.in-addr.arpa. | 65.in-addr.arpa. | (y,v,x,u,w,r,t,z).arin.net. |
| 4 | 135.72.55.65.in-addr.arpa. | 55.65.in-addr.arpa. | (ns2,ns3,ns1,ns5,ns4).msft.net. |
We pick