| step | query | auth | servers |
| 1 | 72.224.125.74.in-addr.arpa. | . | (f,d,b,a,e,c,j,i,g,m,h,l,k).root-servers.net. |
| 2 | 72.224.125.74.in-addr.arpa. | in-addr.arpa. | (d,f,e,a,b,c).in-addr-servers.arpa. |
| 3 | 72.224.125.74.in-addr.arpa. | 74.in-addr.arpa. | (z,u,r,t,w,x,v,y).arin.net. |
| 4 | 72.224.125.74.in-addr.arpa. | 125.74.in-addr.arpa. | (ns4,ns3,ns2,ns1).google.com. |
We pick