Searching for 10.4.121.31.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 117 ms
Searching for 10.4.121.31.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 117 ms
Searching for ns4.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns4.apnic.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 7 ms
Searching for ns4.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 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 i.gtld-servers.net. [192.43.172.30] ...took 7 ms
Searching for ns4.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for ns0.bt.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for ns0.bt.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 24 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 d.gtld-servers.net. [192.31.80.30] ...took 24 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: 279 ms