Searching for 171.16.74.87.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for 171.16.74.87.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 169 ms
SERVFAIL
Searching for 171.16.74.87.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 169 ms
Searching for ns4.apnic.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for ns4.apnic.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 6 ms
Searching for ns4.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 6 ms
Searching for 171.16.74.87.in-addr.arpa. PTR record at ns4.apnic.net. [202.12.31.53]
...took 16 msSearching for ns4.apnic.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 6 ms
Searching for ns4.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 6 ms
Searching for ns.ripe.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for ns.ripe.net. A record at a.gtld-servers.net. [192.5.6.30] ...took 25 ms
Searching for ns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 160 ms
Searching for 171.16.74.87.in-addr.arpa. PTR record at ns.ripe.net. [193.0.9.6]
...took 12 msSearching for ns.ripe.net. A record at a.gtld-servers.net. [192.5.6.30] ...took 25 ms
Searching for ns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 160 ms
SERVFAIL
Searching for ans1.cw.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for ans1.cw.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 11 ms
Searching for ans1.cw.net. A record at ans1.cw.net. [141.1.27.248] ...took 21 ms
Searching for 171.16.74.87.in-addr.arpa. PTR record at ans1.cw.net. [141.1.27.248]
...took 20 msSearching for ans1.cw.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 11 ms
Searching for ans1.cw.net. A record at ans1.cw.net. [141.1.27.248] ...took 21 ms
Nameserver ans1.cw.net. reports: No such host 171.16.74.87.in-addr.arpa.
Total elapsed query time: 491 ms