| step | query | auth | servers |
| 1 | 105.10.119.203.in-addr.arpa. | . | (h,l,m,c,b,e,d,g,i,j,f,a,k).root-servers.net. |
| 2 | 105.10.119.203.in-addr.arpa. | in-addr.arpa. | (e,a,c,f,d,b).in-addr-servers.arpa. |
| 3 | 105.10.119.203.in-addr.arpa. | 203.in-addr.arpa. | ns1.apnic.net. ns4.apnic.net. sec1.authdns.ripe.net. tinnie.arin.net. apnic1.dnsnode.net. dns1.telstra.net. ns3.apnic.net. |
| 4 | 105.10.119.203.in-addr.arpa. | 10.119.203.in-addr.arpa. | (d,b,c,f,e).dns-servers.vn. |
We pick