| step | query | auth | servers |
| 1 | 123.44.136.64.in-addr.arpa. | . | (h,e,i,m,d,j,k,f,a,c,l,g,b).root-servers.net. |
| 2 | 123.44.136.64.in-addr.arpa. | in-addr.arpa. | (c,d,e,b,f,a).in-addr-servers.arpa. |
| 3 | 123.44.136.64.in-addr.arpa. | 64.in-addr.arpa. | (z,t,u,x,r,y,v,w).arin.net. |
| 4 | 123.44.136.64.in-addr.arpa. | 44.136.64.in-addr.arpa. | authns.dca.untd.com. authns.iad.untd.com. authns.vgs.untd.com. |
We pick