Searching for 21.99.143.136.in-addr.arpa. PTR record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 26 ms
Searching for 21.99.143.136.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 171 ms
Searching for 21.99.143.136.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 171 ms
Searching for y.arin.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 75 ms
Searching for y.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for y.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 155 ms
Searching for 21.99.143.136.in-addr.arpa. PTR record at y.arin.net. [192.82.134.30]
...took 6 msSearching for y.arin.net. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for y.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 155 ms
Nameserver y.arin.net. reports: No such host 21.99.143.136.in-addr.arpa.
Total elapsed query time: 440 ms