| step | query | auth | servers |
| 1 | 25.101.154.156.in-addr.arpa. | . | (k,i,l,c,h,a,e,g,b,d,f,j,m).root-servers.net. |
| 2 | 25.101.154.156.in-addr.arpa. | in-addr.arpa. | (f,c,a,d,b,e).in-addr-servers.arpa. |
| 3 | 25.101.154.156.in-addr.arpa. | 156.in-addr.arpa. | (z,u,y,w,v,t,x,dill).arin.net. |
| 4 | 25.101.154.156.in-addr.arpa. | 154.156.in-addr.arpa. | pdns3.ultradns.org. pdns5.ultradns.info. pdns6.ultradns.co.uk. pdns1.ultradns.net. pdns4.ultradns.org. pdns2.ultradns.net. |
We pick