| step | query | auth | servers |
| 1 | 199.128.28.189.in-addr.arpa. | . | (h,l,j,k,i,f,b,m,d,c,g,a,e).root-servers.net. |
| 2 | 199.128.28.189.in-addr.arpa. | in-addr.arpa. | (d,f,b,e,a,c).in-addr-servers.arpa. |
| 3 | 199.128.28.189.in-addr.arpa. | 189.in-addr.arpa. | tinnie.arin.net. a.arpa.dns.br. ns2.lacnic.net. ns3.afrinic.net. ns-lacnic.nic.mx. sec3.apnic.net. sec1.authdns.ripe.net. ns.lacnic.net. |
| 4 | 199.128.28.189.in-addr.arpa. | 128.28.189.in-addr.arpa. | (trty89,trty88).saude.gov.br. |
We pick