| step | query | auth | servers |
| 1 | 1.137.4.199.in-addr.arpa. | . | (e,c,j,a,b,k,f,d,i,l,h,g,m).root-servers.net. |
| 2 | 1.137.4.199.in-addr.arpa. | in-addr.arpa. | (e,c,b,a,f,d).in-addr-servers.arpa. |
| 3 | 1.137.4.199.in-addr.arpa. | 199.in-addr.arpa. | (t,y,u,r,v,x,w,z).arin.net. |
| 4 | 1.137.4.199.in-addr.arpa. | 137.4.199.in-addr.arpa. | (anyns,ns1,ns2).pch.net. |
We pick