Searching for 10.4.121.31.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 260 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 260 ms
Searching for pri.authdns.ripe.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for pri.authdns.ripe.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 19 ms
Searching for pri.authdns.ripe.net. A record at ns3.afrinic.net. [204.61.216.100] ...took 6 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 m.gtld-servers.net. [192.55.83.30] ...took 19 ms
Searching for pri.authdns.ripe.net. A record at ns3.afrinic.net. [204.61.216.100] ...took 6 ms
Searching for ns1.bt.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for ns1.bt.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 7 ms
Searching for ns1.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 31 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at ns1.bt.net. [217.32.105.91]
...took 32 msSearching for ns1.bt.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 7 ms
Searching for ns1.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 31 ms
Nameserver ns1.bt.net. reports: No such host 10.4.121.31.in-addr.arpa.
Total elapsed query time: 411 ms