(gus:14:51)% dig +trace -x 204.130.216.2 ; <<>> DiG 9.4.2-P2 <<>> +trace -x 204.130.216.2 ;; global options: printcmd . 167872 IN NS a.root-servers.net. . 167872 IN NS b.root-servers.net. . 167872 IN NS c.root-servers.net. . 167872 IN NS d.root-servers.net. . 167872 IN NS e.root-servers.net. . 167872 IN NS f.root-servers.net. . 167872 IN NS g.root-servers.net. . 167872 IN NS h.root-servers.net. . 167872 IN NS i.root-servers.net. . 167872 IN NS j.root-servers.net. . 167872 IN NS k.root-servers.net. . 167872 IN NS l.root-servers.net. . 167872 IN NS m.root-servers.net. ;; Received 228 bytes from 74.125.125.125#53(74.125.125.125) in 40 ms 204.in-addr.arpa. 86400 IN NS X.ARIN.NET. 204.in-addr.arpa. 86400 IN NS INDIGO.ARIN.NET. 204.in-addr.arpa. 86400 IN NS HENNA.ARIN.NET. 204.in-addr.arpa. 86400 IN NS Z.ARIN.NET. 204.in-addr.arpa. 86400 IN NS DILL.ARIN.NET. 204.in-addr.arpa. 86400 IN NS Y.ARIN.NET. 204.in-addr.arpa. 86400 IN NS BASIL.ARIN.NET. ;; Received 180 bytes from 192.5.5.241#53(f.root-servers.net) in 10 ms 216.130.204.in-addr.arpa. 86400 IN NS ns2.web9.com. 216.130.204.in-addr.arpa. 86400 IN NS ns1.web9.com. ;; Received 88 bytes from 192.31.80.32#53(INDIGO.ARIN.NET) in 61 ms 216.130.204.in-addr.arpa. 70520 IN NS ns1.web9.com. 216.130.204.in-addr.arpa. 70520 IN NS ns2.web9.com. ;; BAD (HORIZONTAL) REFERRAL ;; Received 120 bytes from 199.33.156.204#53(ns2.web9.com) in 93 ms 216.130.204.in-addr.arpa. 70520 IN NS ns2.web9.com. 216.130.204.in-addr.arpa. 70520 IN NS ns1.web9.com. ;; BAD (HORIZONTAL) REFERRAL ;; Received 120 bytes from 199.33.156.204#53(ns2.web9.com) in 92 ms . 518400 IN NS L.ROOT-SERVERS.NET. . 518400 IN NS H.ROOT-SERVERS.NET. . 518400 IN NS E.ROOT-SERVERS.NET. . 518400 IN NS B.ROOT-SERVERS.NET. . 518400 IN NS J.ROOT-SERVERS.NET. . 518400 IN NS K.ROOT-SERVERS.NET. . 518400 IN NS C.ROOT-SERVERS.NET. . 518400 IN NS I.ROOT-SERVERS.NET. . 518400 IN NS F.ROOT-SERVERS.NET. . 518400 IN NS D.ROOT-SERVERS.NET. . 518400 IN NS M.ROOT-SERVERS.NET. . 518400 IN NS G.ROOT-SERVERS.NET. . 518400 IN NS A.ROOT-SERVERS.NET. ;; BAD REFERRAL ;; Received 255 bytes from 204.130.216.2#53(ns1.web9.com) in 419 ms