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 a.in-addr-servers.arpa. [199.180.182.53] ...took 91 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 91 ms
Searching for arin.authdns.ripe.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 40 ms
Searching for arin.authdns.ripe.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 92 ms
Searching for arin.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 91 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at arin.authdns.ripe.net. [193.0.9.10]
...took 12 msSearching for arin.authdns.ripe.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 92 ms
Searching for arin.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 91 ms
Searching for ens1.jhu.edu. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for ens1.jhu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 24 ms
Searching for ens1.jhu.edu. A record at ens1.jhmi.edu. [162.129.253.134] ...took 98 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at ens1.jhu.edu. [128.220.1.75]
...took 95 msSearching for ens1.jhu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 24 ms
Searching for ens1.jhu.edu. A record at ens1.jhmi.edu. [162.129.253.134] ...took 98 ms
Nameserver ens1.jhu.edu. reports: No such host 17.159.220.128.in-addr.arpa.
Total elapsed query time: 621 ms