Searching for 180.57.111.166.in-addr.arpa. PTR record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for 180.57.111.166.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 265 ms
Searching for 180.57.111.166.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 265 ms
Searching for u.arin.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for u.arin.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 25 ms
Searching for u.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 91 ms
Searching for 180.57.111.166.in-addr.arpa. PTR record at u.arin.net. [204.61.216.50]
...took 11 msSearching for u.arin.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 25 ms
Searching for u.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 91 ms
Searching for dns2.tsinghua.edu.cn. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 12 ms
Searching for dns2.tsinghua.edu.cn. A record at b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for dns2.tsinghua.edu.cn. A record at dns2.tsinghua.edu.cn. [166.111.8.31] ...took 191 ms
Searching for 180.57.111.166.in-addr.arpa. PTR record at dns2.tsinghua.edu.cn. [166.111.8.31]
...took 187 msSearching for dns2.tsinghua.edu.cn. A record at b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for deneb.dfn.de. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for deneb.dfn.de. A record at a.nic.de. [194.0.0.53] ...took 12 ms
Searching for deneb.dfn.de. A record at ns2.dfn.de. [194.95.236.59] ...took 11 ms
Searching for dns2.tsinghua.edu.cn. A record at deneb.dfn.de. [192.76.176.9]
...took 15 msSearching for deneb.dfn.de. A record at a.nic.de. [194.0.0.53] ...took 12 ms
Searching for deneb.dfn.de. A record at ns2.dfn.de. [194.95.236.59] ...took 11 ms
Searching for dns2.tsinghua.edu.cn. A record at dns2.tsinghua.edu.cn. [166.111.8.31] ...took 191 ms
Nameserver dns2.tsinghua.edu.cn. reports: No such host 180.57.111.166.in-addr.arpa.
Total elapsed query time: 872 ms