| step | query | auth | servers |
| 1 | 25.105.154.156.in-addr.arpa. | . | (l,i,b,e,j,m,f,d,h,g,a,c,k).root-servers.net. |
| 2 | 25.105.154.156.in-addr.arpa. | in-addr.arpa. | (c,a,f,d,e,b).in-addr-servers.arpa. |
| 3 | 25.105.154.156.in-addr.arpa. | 156.in-addr.arpa. | (w,y,r,z,t,v,x,u).arin.net. |
| 4 | 25.105.154.156.in-addr.arpa. | 154.156.in-addr.arpa. | pdns3.ultradns.org. pdns1.ultradns.net. pdns5.ultradns.info. pdns2.ultradns.net. pdns4.ultradns.org. pdns6.ultradns.co.uk. |
We pick