Searching for 18.68.210.175.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 18.68.210.175.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for 18.68.210.175.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for ns2.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns2.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 20 ms
Searching for ns2.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 17 ms
Searching for 18.68.210.175.in-addr.arpa. PTR record at ns2.apnic.net. [203.119.95.53]
...took 6 msSearching for ns2.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 20 ms
Searching for ns2.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 17 ms
Searching for b.dns.kr. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for b.dns.kr. A record at g.dns.kr. [202.31.190.1] ...took 7 ms
Searching for 18.68.210.175.in-addr.arpa. PTR record at b.dns.kr. [210.101.60.1]
...took 264 msSearching for b.dns.kr. A record at g.dns.kr. [202.31.190.1] ...took 7 ms
Nameserver b.dns.kr. reports: No such host 18.68.210.175.in-addr.arpa.
Total elapsed query time: 367 ms