Searching for 139.18.166.121.in-addr.arpa. PTR record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 12 ms
Searching for 139.18.166.121.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for 139.18.166.121.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for rirns.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 13 ms
Searching for rirns.arin.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 10 ms
Searching for rirns.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 169 ms
Searching for 139.18.166.121.in-addr.arpa. PTR record at rirns.arin.net. [199.253.249.53]
...took 165 msSearching for rirns.arin.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 10 ms
Searching for rirns.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 169 ms
Searching for b.dns.kr. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for b.dns.kr. A record at d.dns.kr. [203.83.159.1] ...took 282 ms
Searching for 139.18.166.121.in-addr.arpa. PTR record at b.dns.kr. [210.101.60.1]
...took 279 msSearching for b.dns.kr. A record at d.dns.kr. [203.83.159.1] ...took 282 ms
Searching for rev1.kornet.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for rev1.kornet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for rev1.kornet.net. A record at ns.kornet.net. [211.216.50.150] ...took 282 ms
Searching for 139.18.166.121.in-addr.arpa. PTR record at rev1.kornet.net. [211.216.50.170]
...took 283 msSearching for rev1.kornet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for rev1.kornet.net. A record at ns.kornet.net. [211.216.50.150] ...took 282 ms
Nameserver rev1.kornet.net. reports: No such host 139.18.166.121.in-addr.arpa.
Total elapsed query time: 1,541 ms