| step | query | auth | servers |
| 1 | 1.8.120.144.in-addr.arpa. | . | (k,j,m,e,b,a,h,g,f,d,i,c,l).root-servers.net. |
| 2 | 1.8.120.144.in-addr.arpa. | in-addr.arpa. | (f,b,e,c,d,a).in-addr-servers.arpa. |
| 3 | 1.8.120.144.in-addr.arpa. | 144.in-addr.arpa. | (t,y,u,v,w,dill,z,x).arin.net. |
| 4 | 1.8.120.144.in-addr.arpa. | 120.144.in-addr.arpa. | auth00.ns.uu.net. teri.usp.ac.fj. rip.psg.com. ns1.berkeley.edu. munnari.oz.au. |
We pick