Hostname or IP
Type
Searching for 253.147.105.162.in-addr.arpa. PTR record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 1 ms
Searching for 253.147.105.162.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 135 ms
Searching for z.arin.net. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 2 ms
Searching for z.arin.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 9 ms
Searching for z.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 134 ms
Searching for 253.147.105.162.in-addr.arpa. PTR record at z.arin.net. [199.212.0.63] ...took 90 ms
Searching for pkuns.pku.edu.cn. A record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 2 ms
Searching for pkuns.pku.edu.cn. A record at ns.cernet.net. [202.112.0.44] ...took 229 ms
Searching for pkuns.pku.edu.cn. A record at dns.edu.cn. [202.112.0.35] ...took 235 ms
Searching for pkuns.pku.edu.cn. A record at dns.pku.edu.cn. [162.105.129.26] ...took 265 ms
Searching for 253.147.105.162.in-addr.arpa. PTR record at pkuns.pku.edu.cn. [162.105.129.27] ...took 260 ms

Nameserver pkuns.pku.edu.cn. reports: No such host 253.147.105.162.in-addr.arpa.



Total elapsed query time: 1,362 ms
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