Searching for 188.21.78.121.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 188.21.78.121.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 15 ms
Searching for 188.21.78.121.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 15 ms
Searching for ns2.apnic.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for ns2.apnic.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 13 ms
Searching for ns2.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for 188.21.78.121.in-addr.arpa. PTR record at ns2.apnic.net. [203.119.95.53]
...took 5 msSearching for ns2.apnic.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 13 ms
Searching for ns2.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for f.dns.kr. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 12 ms
Searching for f.dns.kr. A record at g.dns.kr. [202.31.190.1] ...took 6 ms
Searching for 188.21.78.121.in-addr.arpa. PTR record at f.dns.kr. [210.101.62.1]
...took 278 msSearching for f.dns.kr. A record at g.dns.kr. [202.31.190.1] ...took 6 ms
Nameserver f.dns.kr. reports: No such host 188.21.78.121.in-addr.arpa.
Total elapsed query time: 543 ms