Searching for 121.164.51.75.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 40 ms
Searching for 121.164.51.75.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 7 ms
Searching for 121.164.51.75.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 7 ms
Searching for x.arin.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 40 ms
Searching for x.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for x.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 150 ms
Searching for 121.164.51.75.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63]
...took 90 msSearching for x.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for x.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 150 ms
Searching for ns3.sbcglobal.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for ns3.sbcglobal.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 87 ms
Searching for ns3.sbcglobal.net. A record at a1-212.akam.net. [193.108.91.212] ...took 6 ms
Searching for 121.164.51.75.in-addr.arpa. PTR record at ns3.sbcglobal.net. [65.68.49.6]
...took 168 msSearching for ns3.sbcglobal.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 87 ms
Searching for ns3.sbcglobal.net. A record at a1-212.akam.net. [193.108.91.212] ...took 6 ms
Nameserver ns3.sbcglobal.net. reports: No such host 121.164.51.75.in-addr.arpa.
Total elapsed query time: 634 ms