| step | query | auth | servers |
| 1 | 11.224.171.69.in-addr.arpa. | . | (m,k,b,j,l,h,e,i,a,d,g,c,f).root-servers.net. |
| 2 | 11.224.171.69.in-addr.arpa. | in-addr.arpa. | (a,e,f,d,c,b).in-addr-servers.arpa. |
| 3 | 11.224.171.69.in-addr.arpa. | 69.in-addr.arpa. | (z,u,x,w,r,t,y,v).arin.net. |
| 4 | 11.224.171.69.in-addr.arpa. | 224.171.69.in-addr.arpa. | (a,b).ns.facebook.com. |
We pick