Searching for 110.157.86.211.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for 110.157.86.211.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for 110.157.86.211.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.67]
Searching for 110.157.86.211.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 203 ms
Searching for 110.157.86.211.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for apnic.authdns.ripe.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for apnic.authdns.ripe.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for apnic.authdns.ripe.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for 110.157.86.211.in-addr.arpa. PTR record at apnic.authdns.ripe.net. [193.0.9.9]
...took 12 msSearching for apnic.authdns.ripe.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for apnic.authdns.ripe.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for dns5.edu.cn. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for dns5.edu.cn. A record at d.dns.cn. [203.119.28.1] ...took 24 ms
SERVFAIL
Searching for dns5.edu.cn. A record at b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for dns5.edu.cn. A record at dns2.edu.cn. [202.112.0.13] ...took 222 ms
Searching for 110.157.86.211.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 24 ms
SERVFAIL
Searching for dns5.edu.cn. A record at b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for ns2.cernet.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for ns2.cernet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 7 ms
Searching for ns2.cernet.net. A record at dns4.cernet.net. [202.112.0.13] ...took 308 ms
Searching for dns5.edu.cn. A record at ns2.cernet.net. [103.137.60.203]
Searching for ns2.cernet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 7 ms
Searching for ns2.cernet.net. A record at dns4.cernet.net. [202.112.0.13] ...took 308 ms
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for dns5.edu.cn. A record at dns2.edu.cn. [202.112.0.13] ...took 222 ms
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for 110.157.86.211.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.67]
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for 110.157.86.211.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 203 ms
Searching for NS.USTC.EDU.CN. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for NS.USTC.EDU.CN. A record at ns.cernet.net. [202.112.0.44] ...took 222 ms
Searching for NS.USTC.EDU.CN. A record at ns.ustc.edu.cn. [202.38.64.1] ...took 233 ms
Searching for 110.157.86.211.in-addr.arpa. PTR record at NS.USTC.EDU.CN. [202.38.64.1]
...took 226 msSearching for NS.USTC.EDU.CN. A record at ns.cernet.net. [202.112.0.44] ...took 222 ms
Searching for NS.USTC.EDU.CN. A record at ns.ustc.edu.cn. [202.38.64.1] ...took 233 ms
Nameserver NS.USTC.EDU.CN. reports: No such host 110.157.86.211.in-addr.arpa.
Total elapsed query time: 7,579 ms