| step | query | auth | servers |
| 1 | 105.147.85.209.in-addr.arpa. | . | (j,e,k,m,i,c,b,f,h,a,g,l,d).root-servers.net. |
| 2 | 105.147.85.209.in-addr.arpa. | in-addr.arpa. | (d,e,f,c,a,b).in-addr-servers.arpa. |
| 3 | 105.147.85.209.in-addr.arpa. | 209.in-addr.arpa. | (z,w,v,x,r,t,u,y).arin.net. |
| 4 | 105.147.85.209.in-addr.arpa. | 147.85.209.in-addr.arpa. | (ns3,ns2,ns4,ns1).google.com. |
We pick