Hostname or IP
Type
Searching for 161.64.45.210.in-addr.arpa. PTR record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 3 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 9 ms
Searching for dns1.telstra.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 1 ms
Searching for dns1.telstra.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 9 ms
Searching for dns1.telstra.net. A record at dns0.telstra.net. [203.50.5.199] ...took 339 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at dns1.telstra.net. [203.50.5.200] ...took 381 ms
Searching for dns5.edu.cn. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 2 ms
Searching for dns5.edu.cn. A record at f.dns.cn. [195.219.8.90] ...took 20 ms
Searching for dns5.edu.cn. A record at dns.edu.cn. [202.112.0.35] ...took 280 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.139] ...took 314 ms
Searching for MX.USTC.EDU.CN. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 2 ms
Searching for MX.USTC.EDU.CN. A record at a.dns.CN. [203.119.25.1] ...took 843 ms
Searching for ns2.cuhk.hk. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 3 ms
Searching for ns2.cuhk.hk. A record at y.hkirc.net.hk. [137.189.6.21] ...took 182 ms
Searching for dns2.cuhk.edu.hk. A record at F.ROOT-SERVERS.NET. [192.5.5.241] ...took 2 ms
Searching for dns2.cuhk.edu.hk. A record at t.hkirc.net.hk. [202.12.31.53] ...took 1 ms
Searching for ns4.gdnsdef.com. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 3 ms
Searching for ns4.gdnsdef.com. A record at i.gtld-servers.net. [192.43.172.30] ...took 85 ms
Searching for ns4.gdnsdef.com. A record at zinc.gdnsdef.com. [45.116.42.1] ...took 14 ms
Searching for dns2.cuhk.edu.hk. A record at ns4.gdnsdef.com. [45.116.42.4] ...took 14 ms
Searching for ns2.cuhk.hk. A record at dns2.cuhk.edu.hk. [137.189.10.16] ...took 183 ms
Searching for MX.USTC.EDU.CN. A record at ns2.cuhk.hk. [137.189.6.21] ...took 181 ms
Searching for MX.USTC.EDU.CN. A record at mx.ustc.edu.cn. [202.38.64.56] ...took 302 ms
Searching for 161.64.45.210.in-addr.arpa. PTR record at MX.USTC.EDU.CN. [202.38.64.56] ...took 311 ms

Nameserver MX.USTC.EDU.CN. reports: No such host 161.64.45.210.in-addr.arpa.



Total elapsed query time: 3,484 ms
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