| step | query | auth | servers |
| 1 | 2.192.172.199.in-addr.arpa. | . | (a,d,m,g,b,k,l,h,c,e,i,f,j).root-servers.net. |
| 2 | 2.192.172.199.in-addr.arpa. | in-addr.arpa. | (a,b,e,c,d,f).in-addr-servers.arpa. |
| 3 | 2.192.172.199.in-addr.arpa. | 199.in-addr.arpa. | (dill,w,v,y,t,x,u,z).arin.net. |
| 4 | 2.192.172.199.in-addr.arpa. | 172.199.in-addr.arpa. | (auth00,auth50).ns.uu.net. |
| 5 | 2.192.172.199.in-addr.arpa. | 192.172.199.in-addr.arpa. | (ns2,ns1).ibl.bm. |
We pick