| step | query | auth | servers |
| 1 | 147.73.194.173.in-addr.arpa. | . | (l,h,g,m,a,j,k,f,e,d,b,i,c).root-servers.net. |
| 2 | 147.73.194.173.in-addr.arpa. | in-addr.arpa. | (f,a,e,b,c,d).in-addr-servers.arpa. |
| 3 | 147.73.194.173.in-addr.arpa. | 173.in-addr.arpa. | (z,r,v,y,t,x,w,u).arin.net. |
| 4 | 147.73.194.173.in-addr.arpa. | 194.173.in-addr.arpa. | (ns3,ns1,ns2,ns4).google.com. |
We pick