| step | query | auth | servers |
| 1 | 55.131.148.180.in-addr.arpa. | . | (k,i,f,j,e,h,d,l,m,c,b,g,a).root-servers.net. |
| 2 | 55.131.148.180.in-addr.arpa. | in-addr.arpa. | (a,b,e,f,d,c).in-addr-servers.arpa. |
| 3 | 55.131.148.180.in-addr.arpa. | 180.in-addr.arpa. | ns1.apnic.net. sec1.authdns.ripe.net. ns3.apnic.net. ns4.apnic.net. apnic1.dnsnode.net. ns2.lacnic.net. tinnie.arin.net. |
| 4 | 55.131.148.180.in-addr.arpa. | 131.148.180.in-addr.arpa. | (ns1,ns2).gate.vn. |
We pick