Searching for 42.12.51.110.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for 42.12.51.110.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 15 ms
Searching for 42.12.51.110.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 15 ms
Searching for ns1.apnic.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for ns1.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 19 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 ms
Searching for 42.12.51.110.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 190 msSearching for ns1.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 19 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 ms
Searching for b.in-addr.cn. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for b.in-addr.cn. A record at e.dns.cn. [203.119.29.1] ...took 22 ms
Searching for 42.12.51.110.in-addr.arpa. PTR record at b.in-addr.cn. [203.119.26.3]
...took 19 msSearching for b.in-addr.cn. A record at e.dns.cn. [203.119.29.1] ...took 22 ms
Nameserver b.in-addr.cn. reports: No such host 42.12.51.110.in-addr.arpa.
Total elapsed query time: 493 ms