Searching for 161.64.45.210.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 170 ms
Searching for ns1.apnic.net. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for ns1.apnic.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 11 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 190 msSearching for ns1.apnic.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 11 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 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 b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30]
...took 198 msSearching for dns5.edu.cn. A record at b.dns.cn. [203.119.26.1] ...took 19 ms
Searching for ns2.cuhk.hk. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns2.cuhk.hk. A record at v.hkirc.net.hk. [204.61.216.46] ...took 11 ms
Searching for dns5.edu.cn. A record at ns2.cuhk.hk. [137.189.6.21]
...took 254 msSearching for ns2.cuhk.hk. A record at v.hkirc.net.hk. [204.61.216.46] ...took 11 ms
Searching for MX.USTC.EDU.CN. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for MX.USTC.EDU.CN. A record at a.dns.cn. [203.119.25.1] ...took 171 ms
Searching for MX.USTC.EDU.CN. A record at ns.ustc.edu.cn. [202.38.64.1] ...took 224 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at MX.USTC.EDU.CN. [202.38.64.56]
...took 215 msSearching for MX.USTC.EDU.CN. A record at a.dns.cn. [203.119.25.1] ...took 171 ms
Searching for ns2.cernet.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns2.cernet.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for ns2.cernet.net. A record at dns2.cernet.net. [202.112.0.13] ...took 222 ms
Searching for MX.USTC.EDU.CN. A record at ns2.cernet.net. [103.137.60.203]
...took 199 msSearching for ns2.cernet.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for ns2.cernet.net. A record at dns2.cernet.net. [202.112.0.13] ...took 222 ms
Searching for MX.USTC.EDU.CN. A record at ns.ustc.edu.cn. [202.38.64.1] ...took 224 ms
Nameserver MX.USTC.EDU.CN. reports: No such host 161.64.45.210.in-addr.arpa.
Total elapsed query time: 2,163 ms