| step | query | auth | servers |
| 1 | 90.178.28.69.in-addr.arpa. | . | (l,h,f,a,k,m,b,e,i,d,g,c,j).root-servers.net. |
| 2 | 90.178.28.69.in-addr.arpa. | in-addr.arpa. | (f,e,d,b,a,c).in-addr-servers.arpa. |
| 3 | 90.178.28.69.in-addr.arpa. | 69.in-addr.arpa. | (t,y,z,x,w,r,v,u).arin.net. |
| 4 | 90.178.28.69.in-addr.arpa. | 178.28.69.in-addr.arpa. | dns.iad.llns.net. dns.sjc.llns.net. dns.lga.llns.net. dns.lax.llns.net. |
We pick