| step | query | auth | servers |
| 1 | 2.1.206.130.in-addr.arpa. | . | (d,e,k,m,a,i,g,h,j,b,c,f,l).root-servers.net. |
| 2 | 2.1.206.130.in-addr.arpa. | in-addr.arpa. | (e,c,b,f,a,d).in-addr-servers.arpa. |
| 3 | 2.1.206.130.in-addr.arpa. | 130.in-addr.arpa. | (t,z,dill,v,y,u,x,w).arin.net. |
| 4 | 2.1.206.130.in-addr.arpa. | 206.130.in-addr.arpa. | sun.rediris.es. chico.rediris.es. scsnms.switch.ch. sunic.sunet.se. |
We pick