Searching for 17.120.117.202.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 170 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.67]
Searching for 17.120.117.202.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 187 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 170 ms
Searching for apnic.authdns.ripe.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for apnic.authdns.ripe.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 23 ms
Searching for apnic.authdns.ripe.net. A record at manus.authdns.ripe.net. [193.0.9.7] ...took 12 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at apnic.authdns.ripe.net. [193.0.9.9]
...took 11 msSearching for apnic.authdns.ripe.net. A record at e.gtld-servers.net. [192.12.94.30] ...took 23 ms
Searching for apnic.authdns.ripe.net. A record at manus.authdns.ripe.net. [193.0.9.7] ...took 12 ms
Searching for dns5.edu.cn. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 25 ms
Searching for dns5.edu.cn. A record at d.dns.cn. [203.119.28.1] ...took 26 ms
SERVFAIL
Searching for dns5.edu.cn. A record at ns.cernet.net. [202.112.0.44] ...took 184 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.235]
Searching for dns5.edu.cn. A record at d.dns.cn. [203.119.28.1] ...took 26 ms
SERVFAIL
Searching for dns5.edu.cn. A record at ns.cernet.net. [202.112.0.44] ...took 184 ms
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for 17.120.117.202.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.67]
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for 17.120.117.202.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 187 ms
Searching for NS1.XIDIAN.EDU.CN. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for NS1.XIDIAN.EDU.CN. A record at a.dns.cn. [203.119.25.1] ...took 224 ms
Searching for NS1.XIDIAN.EDU.CN. A record at ns1.xidian.edu.cn. [202.117.112.3] ...took 260 ms
Searching for 17.120.117.202.in-addr.arpa. PTR record at NS1.XIDIAN.EDU.CN. [202.117.112.3]
...took 260 msSearching for NS1.XIDIAN.EDU.CN. A record at a.dns.cn. [203.119.25.1] ...took 224 ms
Searching for ns2.cuhk.hk. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 69 ms
Searching for ns2.cuhk.hk. A record at d.hkirc.net.hk. [203.119.87.218] ...took 238 ms
Searching for NS1.XIDIAN.EDU.CN. A record at ns2.cuhk.hk. [137.189.6.21]
...took 347 msSearching for ns2.cuhk.hk. A record at d.hkirc.net.hk. [203.119.87.218] ...took 238 ms
Searching for dns2.cuhk.edu.hk. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for dns2.cuhk.edu.hk. A record at x.hkirc.net.hk. [202.45.188.39] ...took 219 ms
Searching for dns2.cuhk.edu.hk. A record at dns2.cuhk.edu.hk. [137.189.6.22] ...took 349 ms
Searching for ns2.cuhk.hk. A record at dns2.cuhk.edu.hk. [137.189.6.22]
...took 349 msSearching for dns2.cuhk.edu.hk. A record at x.hkirc.net.hk. [202.45.188.39] ...took 219 ms
Searching for dns2.cuhk.edu.hk. A record at dns2.cuhk.edu.hk. [137.189.6.22] ...took 349 ms
Searching for NS1.XIDIAN.EDU.CN. A record at ns1.xidian.edu.cn. [202.117.112.3] ...took 260 ms
Nameserver NS1.XIDIAN.EDU.CN. reports: No such host 17.120.117.202.in-addr.arpa.
Total elapsed query time: 7,006 ms