Searching for 249.86.112.140.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 30 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 293 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at ntuns.ntu.edu.tw. [140.112.254.68] ...took 296 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 293 ms
Searching for z.arin.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12]
...took 11 ms
Searching for z.arin.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for z.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 90 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at z.arin.net. [199.180.180.63]
...took 92 msSearching for z.arin.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for z.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 90 ms
Searching for dns.ntu.edu.tw. A record at C.ROOT-SERVERS.NET. [192.33.4.12]
...took 11 ms
Searching for dns.ntu.edu.tw. A record at e.dns.tw. [211.20.231.11] ...took 214 ms
Searching for dns.ntu.edu.tw. A record at dns.ntu.edu.tw. [140.112.254.4] ...took 292 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at dns.ntu.edu.tw. [140.112.254.4]
...took 295 msSearching for dns.ntu.edu.tw. A record at e.dns.tw. [211.20.231.11] ...took 214 ms
Searching for dns.ntu.edu.tw. A record at dns.ntu.edu.tw. [140.112.254.4] ...took 292 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at ntuns.ntu.edu.tw. [140.112.254.68] ...took 296 ms
Nameserver ntuns.ntu.edu.tw. reports: No such host 249.86.112.140.in-addr.arpa.
Total elapsed query time: 1,636 ms