Searching for 38.123.42.210.in-addr.arpa. PTR record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 12 ms
Searching for 38.123.42.210.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 151 ms
Searching for 38.123.42.210.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.235]
Searching for 38.123.42.210.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 201 ms
Searching for 38.123.42.210.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 151 ms
Searching for ns1.apnic.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 75 ms
Searching for ns1.apnic.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for ns1.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for 38.123.42.210.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 190 msSearching for ns1.apnic.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for ns1.apnic.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 12 ms
Searching for dns5.edu.cn. A record at d.dns.cn. [203.119.28.1] ...took 24 ms
Searching for 38.123.42.210.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.67]
Searching for dns5.edu.cn. A record at d.dns.cn. [203.119.28.1] ...took 24 ms
Searching for ns2.cernet.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 13 ms
Searching for ns2.cernet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for ns2.cernet.net. A record at dns.cernet.net. [202.38.109.35] ...took 200 ms
Searching for dns5.edu.cn. A record at ns2.cernet.net. [103.137.60.203]
...took 199 msSearching for ns2.cernet.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for ns2.cernet.net. A record at dns.cernet.net. [202.38.109.35] ...took 200 ms
Query timed out (interrupted after 2,002 milliseconds)
Retrying...Searching for 38.123.42.210.in-addr.arpa. PTR record at dns5.edu.cn. [101.4.126.235]
Query timed out (interrupted after 2,001 milliseconds)
Retrying...Searching for 38.123.42.210.in-addr.arpa. PTR record at dns5.edu.cn. [166.111.8.30] ...took 201 ms
Nameserver dns5.edu.cn. reports: No such host 38.123.42.210.in-addr.arpa.
Total elapsed query time: 5,113 ms