Reverse DNS Lookup for 140.112.86.249

Searching for 249.86.112.140.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 14 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms

Searching for z.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 14 ms
Searching for z.arin.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 21 ms
Searching for z.arin.net. A record at u.arin.net. [204.61.216.50] ...took 15 ms

Searching for 249.86.112.140.in-addr.arpa. PTR record at z.arin.net. [199.180.180.63] ...took 143 ms

Searching for news.ntu.edu.tw. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 14 ms
Searching for news.ntu.edu.tw. A record at c.dns.tw. [203.66.87.201] ...took 214 ms
Searching for news.ntu.edu.tw. A record at b.twnic.net.tw. [203.73.24.24] ...took 182 ms
Searching for news.ntu.edu.tw. A record at ntu3.ntu.edu.tw. [140.112.2.2] ...took 308 ms

Searching for 249.86.112.140.in-addr.arpa. PTR record at news.ntu.edu.tw. [140.112.254.2] Timed out while trying to resolve 249.86.112.140.in-addr.arpa./PTR, id=3043
Searching for 249.86.112.140.in-addr.arpa. PTR record at dns.ntu.edu.tw. [140.112.254.4] ...took 302 ms
Searching for 249.86.112.140.in-addr.arpa. PTR record at ntuns.ntu.edu.tw. [140.112.254.68] ...took 297 ms

Nameserver ntuns.ntu.edu.tw. reports: No such host 249.86.112.140.in-addr.arpa.

Total elapsed query time: 3,531 ms