| step | query | auth | servers |
|---|
| 1 | 6.121.233.213.in-addr.arpa. | . | (i,c,f,h,k,g,d,j,m,a,l,b,e).root-servers.net. |
| 2 | 6.121.233.213.in-addr.arpa. | in-addr.arpa. | (b,f,a,e,c,d).in-addr-servers.arpa. |
| 3 | 6.121.233.213.in-addr.arpa. | 213.in-addr.arpa. | pri.authdns.ripe.net. ns3.nic.fr. tinnie.arin.net. sns-pb.isc.org. sec1.apnic.net. sec3.apnic.net. |
| 4 | 6.121.233.213.in-addr.arpa. | 121.233.213.in-addr.arpa. | (ns1,ns2).vodafonenet.ro. |
We pick 
