Searching for 247.21.152.121.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 20 ms
Searching for 247.21.152.121.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 91 ms
Searching for 247.21.152.121.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 91 ms
Searching for ns2.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 21 ms
Searching for ns2.apnic.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for ns2.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 165 ms
Searching for 247.21.152.121.in-addr.arpa. PTR record at ns2.apnic.net. [203.119.95.53]
...took 125 msSearching for ns2.apnic.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for ns2.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 165 ms
Searching for g.dns.kr. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 21 ms
Searching for g.dns.kr. A record at f.dns.kr. [210.101.62.1] ...took 283 ms
Searching for 247.21.152.121.in-addr.arpa. PTR record at g.dns.kr. [202.31.190.1]
...took 7 msSearching for g.dns.kr. A record at f.dns.kr. [210.101.62.1] ...took 283 ms
Searching for rev2.kornet.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 20 ms
Searching for rev2.kornet.net. A record at h.gtld-servers.net. [192.54.112.30] ...took 7 ms
Searching for rev2.kornet.net. A record at ns2.kornet.net. [211.216.50.160] ...took 285 ms
Searching for 247.21.152.121.in-addr.arpa. PTR record at rev2.kornet.net. [211.216.50.180]
...took 288 msSearching for rev2.kornet.net. A record at h.gtld-servers.net. [192.54.112.30] ...took 7 ms
Searching for rev2.kornet.net. A record at ns2.kornet.net. [211.216.50.160] ...took 285 ms
Nameserver rev2.kornet.net. reports: No such host 247.21.152.121.in-addr.arpa.
Total elapsed query time: 1,340 ms