| step | query | auth | servers |
| 1 | 210.172.0.141.in-addr.arpa. | . | (h,f,k,l,e,g,i,a,m,c,j,d,b).root-servers.net. |
| 2 | 210.172.0.141.in-addr.arpa. | in-addr.arpa. | (f,b,e,c,a,d).in-addr-servers.arpa. |
| 3 | 210.172.0.141.in-addr.arpa. | 141.in-addr.arpa. | pri.authdns.ripe.net. tinnie.arin.net. ns3.nic.fr. sns-pb.isc.org. sec1.apnic.net. sec3.apnic.net. |
| 4 | 210.172.0.141.in-addr.arpa. | 172.0.141.in-addr.arpa. | (ns4,ns2,ns1,ns3).serverstack.com. |
We pick