| step | query | auth | servers |
| 1 | 47.145.13.213.in-addr.arpa. | . | (h,b,d,e,k,f,a,j,l,i,m,c,g).root-servers.net. |
| 2 | 47.145.13.213.in-addr.arpa. | in-addr.arpa. | (e,f,b,d,c,a).in-addr-servers.arpa. |
| 3 | 47.145.13.213.in-addr.arpa. | 213.in-addr.arpa. | sec1.apnic.net. sns-pb.isc.org. ns3.nic.fr. pri.authdns.ripe.net. tinnie.arin.net. sec3.apnic.net. |
| 4 | 47.145.13.213.in-addr.arpa. | 13.213.in-addr.arpa. | ns2.telepac.pt. ns.telepac.pt. ns.ripe.net. |
| 5 | 47.145.13.213.in-addr.arpa. | 145.13.213.in-addr.arpa. | (ns).sapo.pt. |
We pick