Searching for 174.107.121.42.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for 174.107.121.42.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 250 ms
Searching for 174.107.121.42.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 250 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 b.gtld-servers.net. [192.33.14.30] ...took 12 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 ms
Searching for 174.107.121.42.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 190 msSearching for ns1.apnic.net. A record at b.gtld-servers.net. [192.33.14.30] ...took 12 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 190 ms
Searching for ns5.aliyun.com. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 26 ms
Searching for ns5.aliyun.com. A record at c.gtld-servers.net. [192.26.92.30] ...took 24 ms
Searching for ns5.aliyun.com. A record at ns5.aliyun.com. [47.241.207.14] ...took 245 ms
Searching for 174.107.121.42.in-addr.arpa. PTR record at ns5.aliyun.com. [140.205.122.153]
...took 40 msSearching for ns5.aliyun.com. A record at c.gtld-servers.net. [192.26.92.30] ...took 24 ms
Searching for ns5.aliyun.com. A record at ns5.aliyun.com. [47.241.207.14] ...took 245 ms
Nameserver ns5.aliyun.com. reports: No such host 174.107.121.42.in-addr.arpa.
Total elapsed query time: 1,000 ms