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Hostname or IP Type  
Searching for 163.54.214.144.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17] ...took 1 ms
Searching for 163.54.214.144.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 14 ms
Searching for v.arin.net. A record at H.ROOT-SERVERS.NET. [128.63.2.53] ...took 122 ms
Searching for v.arin.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 106 ms
Searching for v.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 159 ms
Searching for 163.54.214.144.in-addr.arpa. PTR record at v.arin.net. [63.243.194.2] ...took 13 ms
Searching for spain.cityu.edu.hk. A record at I.ROOT-SERVERS.NET. [192.36.148.17] ...took 0 ms
Searching for spain.cityu.edu.hk. A record at u.hkirc.net.hk. [210.201.138.58] ...took 285 ms
Searching for spain.cityu.edu.hk. A record at VAX.cityu.edu.hk. [144.214.2.1] ...took 208 ms
Searching for 163.54.214.144.in-addr.arpa. PTR record at spain.cityu.edu.hk. [144.214.2.1] ...took 210 ms
Searching for 163.54.214.144.in-addr.arpa. PTR record at isnss01.is.cityu.edu.hk. [144.214.55.233] ...took 210 ms

Nameserver isnss01.is.cityu.edu.hk. reports: No such host 163.54.214.144.in-addr.arpa.



Total elapsed query time: 1,328 ms