| step | query | auth | servers |
| 1 | 2.81.146.150.in-addr.arpa. | . | (b,l,m,f,k,g,a,i,j,c,e,d,h).root-servers.net. |
| 2 | 2.81.146.150.in-addr.arpa. | in-addr.arpa. | (d,a,e,c,b,f).in-addr-servers.arpa. |
| 3 | 2.81.146.150.in-addr.arpa. | 150.in-addr.arpa. | apnic1.dnsnode.net. ns4.apnic.net. ns1.apnic.net. ns2.lacnic.net. tinnie.arin.net. sec1.authdns.ripe.net. ns3.apnic.net. |
| 4 | 2.81.146.150.in-addr.arpa. | 146.150.in-addr.arpa. | nameserver.cnr.it. dns2.rm.cnr.it. dns.rm.cnr.it. |
We pick