Searching for 17.159.220.128.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms
Searching for u.arin.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 40 ms
Searching for u.arin.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 40 ms
Searching for u.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 142 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at u.arin.net. [204.61.216.50]
...took 17 msSearching for u.arin.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 40 ms
Searching for u.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 142 ms
Searching for ens1.jhu.edu. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 40 ms
Searching for ens1.jhu.edu. A record at g.edu-servers.net. [192.42.93.30] ...took 7 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 96 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at ens1.jhu.edu. [128.220.1.75]
...took 97 msSearching for ens1.jhu.edu. A record at g.edu-servers.net. [192.42.93.30] ...took 7 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 96 ms
Nameserver ens1.jhu.edu. reports: No such host 17.159.220.128.in-addr.arpa.
Total elapsed query time: 524 ms