| step | query | auth | servers |
| 1 | 202.142.148.180.in-addr.arpa. | . | (c,i,h,b,j,g,e,k,f,a,d,m,l).root-servers.net. |
| 2 | 202.142.148.180.in-addr.arpa. | in-addr.arpa. | (c,a,d,f,e,b).in-addr-servers.arpa. |
| 3 | 202.142.148.180.in-addr.arpa. | 180.in-addr.arpa. | ns2.lacnic.net. ns3.apnic.net. sec1.authdns.ripe.net. ns1.apnic.net. apnic1.dnsnode.net. ns4.apnic.net. tinnie.arin.net. |
| 4 | 202.142.148.180.in-addr.arpa. | 142.148.180.in-addr.arpa. | (ns1,ns2).gate.vn. |
We pick