| step | query | auth | servers |
| 1 | 47.32.13.72.in-addr.arpa. | . | (f,k,e,d,m,c,g,a,h,j,l,i,b).root-servers.net. |
| 2 | 47.32.13.72.in-addr.arpa. | in-addr.arpa. | (f,b,d,a,e,c).in-addr-servers.arpa. |
| 3 | 47.32.13.72.in-addr.arpa. | 72.in-addr.arpa. | (u,x,z,w,r,t,y,v).arin.net. |
| 4 | 47.32.13.72.in-addr.arpa. | 32.13.72.in-addr.arpa. | ns2.nsiregistry.net. ns1.crsnic.net. |
We pick