| step | query | auth | servers |
| 1 | 117.28.77.219.in-addr.arpa. | . | (c,l,f,m,g,h,b,d,a,k,i,e,j).root-servers.net. |
| 2 | 117.28.77.219.in-addr.arpa. | in-addr.arpa. | (b,e,d,c,a,f).in-addr-servers.arpa. |
| 3 | 117.28.77.219.in-addr.arpa. | 219.in-addr.arpa. | ns2.lacnic.net. apnic1.dnsnode.net. sec1.authdns.ripe.net. tinnie.arin.net. ns4.apnic.net. ns3.apnic.net. ns1.apnic.net. |
| 4 | 117.28.77.219.in-addr.arpa. | 77.219.in-addr.arpa. | (ns4,ns6).netvigator.com. |
We pick