Searching for 10.4.121.31.in-addr.arpa. PTR record at L.ROOT-SERVERS.NET. [199.7.83.42]
...took 10 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 254 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 254 ms
Searching for ns4.apnic.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 7 ms
Searching for ns4.apnic.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for ns4.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 6 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at ns4.apnic.net. [202.12.31.53]
...took 16 msSearching for ns4.apnic.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for ns4.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 6 ms
Searching for ns0.bt.net. A record at L.ROOT-SERVERS.NET. [199.7.83.42]
...took 10 ms
Searching for ns0.bt.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns0.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 29 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at ns0.bt.net. [217.35.209.188]
...took 26 msSearching for ns0.bt.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns0.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 29 ms
Nameserver ns0.bt.net. reports: No such host 10.4.121.31.in-addr.arpa.
Total elapsed query time: 382 ms