Searching for 17.159.220.128.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for arin.authdns.ripe.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for arin.authdns.ripe.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 12 ms
Searching for arin.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 199 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 b.gtld-servers.net. [192.33.14.30] ...took 12 ms
Searching for arin.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 199 ms
Searching for ens1.jhu.edu. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ens1.jhu.edu. A record at h.edu-servers.net. [192.54.112.30] ...took 6 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 98 ms
Searching for 17.159.220.128.in-addr.arpa. PTR record at ens1.jhu.edu. [128.220.1.75]
...took 109 msSearching for ens1.jhu.edu. A record at h.edu-servers.net. [192.54.112.30] ...took 6 ms
Searching for ens1.jhu.edu. A record at ens1.jhu.edu. [128.220.1.75] ...took 98 ms
Nameserver ens1.jhu.edu. reports: No such host 17.159.220.128.in-addr.arpa.
Total elapsed query time: 646 ms