Searching for 15.71.135.128.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for 15.71.135.128.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for 15.71.135.128.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for z.arin.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for z.arin.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 5 ms
Searching for z.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 92 ms
Searching for 15.71.135.128.in-addr.arpa. PTR record at z.arin.net. [199.180.180.63]
...took 157 msSearching for z.arin.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 5 ms
Searching for z.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 92 ms
Searching for ucns3.uchicago.edu. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for ucns3.uchicago.edu. A record at f.edu-servers.net. [192.35.51.30] ...took 6 ms
Searching for ucns3.uchicago.edu. A record at ucns1.uchicago.uiowa.edu. [198.49.182.19] ...took 124 ms
Searching for 15.71.135.128.in-addr.arpa. PTR record at ucns3.uchicago.edu. [128.135.249.250]
...took 116 msSearching for ucns3.uchicago.edu. A record at f.edu-servers.net. [192.35.51.30] ...took 6 ms
Searching for ucns3.uchicago.edu. A record at ucns1.uchicago.uiowa.edu. [198.49.182.19] ...took 124 ms
Nameserver ucns3.uchicago.edu. reports: No such host 15.71.135.128.in-addr.arpa.
Total elapsed query time: 546 ms