| step | query | auth | servers |
| 1 | 139.78.223.193.in-addr.arpa. | . | (f,e,l,j,d,i,a,m,h,k,g,c,b).root-servers.net. |
| 2 | 139.78.223.193.in-addr.arpa. | in-addr.arpa. | (b,e,c,f,d,a).in-addr-servers.arpa. |
| 3 | 139.78.223.193.in-addr.arpa. | 193.in-addr.arpa. | sec3.apnic.net. sns-pb.isc.org. ns3.nic.fr. sec1.apnic.net. tinnie.arin.net. pri.authdns.ripe.net. |
| 4 | 139.78.223.193.in-addr.arpa. | 78.223.193.in-addr.arpa. | ns9.inone.com. ns1.communitydns.net. ns6.icb.co.uk. |
We pick