Searching for 210.21.50.74.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 210.21.50.74.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 269 ms
Searching for 210.21.50.74.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 269 ms
Searching for x.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for x.arin.net. A record at u.arin.net. [204.61.216.50] ...took 6 ms
Searching for 210.21.50.74.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63]
...took 92 msSearching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for x.arin.net. A record at u.arin.net. [204.61.216.50] ...took 6 ms
Nameserver x.arin.net. reports: No such host 210.21.50.74.in-addr.arpa.
Total elapsed query time: 407 ms