| step | query | auth | servers |
| 1 | 15.100.154.156.in-addr.arpa. | . | (f,b,c,l,e,k,d,j,g,i,h,a,m).root-servers.net. |
| 2 | 15.100.154.156.in-addr.arpa. | in-addr.arpa. | (e,c,b,a,d,f).in-addr-servers.arpa. |
| 3 | 15.100.154.156.in-addr.arpa. | 156.in-addr.arpa. | (t,w,u,x,v,r,y,z).arin.net. |
| 4 | 15.100.154.156.in-addr.arpa. | 154.156.in-addr.arpa. | pdns6.ultradns.co.uk. pdns3.ultradns.org. pdns5.ultradns.info. pdns1.ultradns.net. pdns4.ultradns.org. pdns2.ultradns.net. |
We pick