Searching for 121.177.176.143.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for 121.177.176.143.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
SERVFAIL
Searching for 121.177.176.143.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 D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for arin.authdns.ripe.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 21 ms
Searching for arin.authdns.ripe.net. A record at ns3.afrinic.net. [204.61.216.100] ...took 11 ms
Searching for 121.177.176.143.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 e.gtld-servers.net. [192.12.94.30] ...took 21 ms
Searching for arin.authdns.ripe.net. A record at ns3.afrinic.net. [204.61.216.100] ...took 11 ms
SERVFAIL
Searching for x.arin.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for x.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 156 ms
Searching for 121.177.176.143.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63]
...took 155 msSearching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for x.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 156 ms
Searching for ns1.versatel.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for ns1.versatel.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns1.versatel.net. A record at ns1.versatel.net. [62.58.62.132] ...took 12 ms
Searching for 121.177.176.143.in-addr.arpa. PTR record at ns1.versatel.net. [62.58.62.132]
...took 11 msSearching for ns1.versatel.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns1.versatel.net. A record at ns1.versatel.net. [62.58.62.132] ...took 12 ms
Nameserver ns1.versatel.net. reports: No such host 121.177.176.143.in-addr.arpa.
Total elapsed query time: 616 ms