Searching for 72.132.123.221.in-addr.arpa. PTR record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 18 ms
Searching for 72.132.123.221.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
SERVFAIL
Searching for 72.132.123.221.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for ns1.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns1.apnic.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 24 ms
Searching for ns1.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 5 ms
Searching for 72.132.123.221.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 190 msSearching for ns1.apnic.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 24 ms
Searching for ns1.apnic.net. A record at ns2.apnic.net. [203.119.95.53] ...took 5 ms
Searching for a.in-addr.cn. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 12 ms
Searching for a.in-addr.cn. A record at d.dns.cn. [203.119.28.1] ...took 24 ms
Searching for 72.132.123.221.in-addr.arpa. PTR record at a.in-addr.cn. [203.119.25.3]
...took 244 msSearching for a.in-addr.cn. A record at d.dns.cn. [203.119.28.1] ...took 24 ms
Searching for ns2.shanxx.com. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for ns2.shanxx.com. A record at d.gtld-servers.net. [192.31.80.30] ...took 25 ms
Searching for ns2.shanxx.com. A record at dns18.hichina.com. [47.118.199.222] ...took 406 ms
Searching for 72.132.123.221.in-addr.arpa. PTR record at ns2.shanxx.com. [101.254.148.132]
...took 323 msSearching for ns2.shanxx.com. A record at d.gtld-servers.net. [192.31.80.30] ...took 25 ms
Searching for ns2.shanxx.com. A record at dns18.hichina.com. [47.118.199.222] ...took 406 ms
SERVFAIL
Searching for ns1.shanxx.com. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for ns1.shanxx.com. A record at c.gtld-servers.net. [192.26.92.30] ...took 25 ms
Searching for ns1.shanxx.com. A record at dns18.hichina.com. [47.118.199.222] ...took 402 ms
Searching for 72.132.123.221.in-addr.arpa. PTR record at ns1.shanxx.com. [101.254.148.131]
...took 258 msSearching for ns1.shanxx.com. A record at c.gtld-servers.net. [192.26.92.30] ...took 25 ms
Searching for ns1.shanxx.com. A record at dns18.hichina.com. [47.118.199.222] ...took 402 ms
Nameserver ns1.shanxx.com. reports: No such host 72.132.123.221.in-addr.arpa.
Total elapsed query time: 2,004 ms