Searching for 22.236.122.168.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 22.236.122.168.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 89 ms
Searching for 22.236.122.168.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 89 ms
Searching for r.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for r.arin.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 32 ms
Searching for r.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 149 ms
Searching for 22.236.122.168.in-addr.arpa. PTR record at r.arin.net. [199.180.180.63]
...took 94 msSearching for r.arin.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 32 ms
Searching for r.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 149 ms
Searching for edns01.bu.edu. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for edns01.bu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 24 ms
Searching for edns01.bu.edu. A record at edns03.bu.edu. [3.210.172.14] ...took 105 ms
Searching for 22.236.122.168.in-addr.arpa. PTR record at edns01.bu.edu. [54.162.183.186]
...took 101 msSearching for edns01.bu.edu. A record at c.edu-servers.net. [192.26.92.30] ...took 24 ms
Searching for edns01.bu.edu. A record at edns03.bu.edu. [3.210.172.14] ...took 105 ms
Nameserver edns01.bu.edu. reports: No such host 22.236.122.168.in-addr.arpa.
Total elapsed query time: 638 ms