Searching for 17.159.220.128.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 190 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 190 ms
Searching for x.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for x.arin.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for x.arin.net. A record at u.arin.net. [204.61.216.50] ...took 6 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63]
...took 89 msSearching for x.arin.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for x.arin.net. A record at u.arin.net. [204.61.216.50] ...took 6 ms
Searching for ens1.jhu.edu. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for ens1.jhu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 21 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 107 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at ens1.jhu.edu. [128.220.1.75]
...took 101 msSearching for ens1.jhu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 21 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 107 ms
Nameserver ens1.jhu.edu. reports: No such host 17.159.220.128.in-addr.arpa.
Total elapsed query time: 571 ms