Searching for 10.4.121.31.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 31 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 274 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 274 ms
Searching for pri.authdns.ripe.net. A record at H.ROOT-SERVERS.NET. [198.97.190.53]
...took 6 ms
Searching for pri.authdns.ripe.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for pri.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 90 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at pri.authdns.ripe.net. [193.0.9.5]
...took 12 msSearching for pri.authdns.ripe.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for pri.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 90 ms
Searching for ns2.bt.net. A record at H.ROOT-SERVERS.NET. [198.97.190.53]
...took 7 ms
Searching for ns2.bt.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for ns2.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 30 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at ns2.bt.net. [217.32.105.90]
...took 29 msSearching for ns2.bt.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for ns2.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 30 ms
Nameserver ns2.bt.net. reports: No such host 10.4.121.31.in-addr.arpa.
Total elapsed query time: 503 ms