Searching for 171.21.78.121.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for 171.21.78.121.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for 171.21.78.121.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for apnic.authdns.ripe.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for apnic.authdns.ripe.net. A record at h.gtld-servers.net. [192.54.112.30] ...took 22 ms
Searching for apnic.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 201 ms
Searching for 171.21.78.121.in-addr.arpa. PTR record at apnic.authdns.ripe.net. [193.0.9.9]
...took 12 msSearching for apnic.authdns.ripe.net. A record at h.gtld-servers.net. [192.54.112.30] ...took 22 ms
Searching for apnic.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 201 ms
Searching for d.dns.kr. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for d.dns.kr. A record at c.dns.kr. [210.101.61.1] ...took 317 ms
Searching for 171.21.78.121.in-addr.arpa. PTR record at d.dns.kr. [203.83.159.1]
...took 284 msSearching for d.dns.kr. A record at c.dns.kr. [210.101.61.1] ...took 317 ms
Nameserver d.dns.kr. reports: No such host 171.21.78.121.in-addr.arpa.
Total elapsed query time: 1,040 ms