Searching for 21.1.153.50.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for 21.1.153.50.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 265 ms
Searching for 21.1.153.50.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 265 ms
Searching for z.arin.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 75 ms
Searching for z.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 6 ms
Searching for z.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 147 ms
Searching for 21.1.153.50.in-addr.arpa. PTR record at z.arin.net. [199.180.180.63]
...took 155 msSearching for z.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 6 ms
Searching for z.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 147 ms
Searching for dns103.comcast.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for dns103.comcast.net. A record at c.gtld-servers.net. [192.26.92.30] ...took 25 ms
Searching for dns103.comcast.net. A record at dns105.comcast.net. [68.87.72.244] ...took 114 ms
Searching for 21.1.153.50.in-addr.arpa. PTR record at dns103.comcast.net. [68.87.76.228]
...took 165 msSearching for dns103.comcast.net. A record at c.gtld-servers.net. [192.26.92.30] ...took 25 ms
Searching for dns103.comcast.net. A record at dns105.comcast.net. [68.87.72.244] ...took 114 ms
Nameserver dns103.comcast.net. reports: No such host 21.1.153.50.in-addr.arpa.
Total elapsed query time: 978 ms