| step | query | auth | servers |
| 1 | 39.247.171.69.in-addr.arpa. | . | (a,e,g,b,c,h,i,k,d,l,m,j,f).root-servers.net. |
| 2 | 39.247.171.69.in-addr.arpa. | in-addr.arpa. | (b,d,f,e,a,c).in-addr-servers.arpa. |
| 3 | 39.247.171.69.in-addr.arpa. | 69.in-addr.arpa. | (w,y,u,r,x,t,v,z).arin.net. |
| 4 | 39.247.171.69.in-addr.arpa. | 247.171.69.in-addr.arpa. | (a,b).ns.facebook.com. |
We pick