Searching for 15.123.6.117.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 15.123.6.117.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 174 ms
Searching for 15.123.6.117.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 174 ms
Searching for rirns.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for rirns.arin.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 13 ms
Searching for rirns.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 196 ms
Searching for 15.123.6.117.in-addr.arpa. PTR record at rirns.arin.net. [199.253.249.53]
...took 94 msSearching for rirns.arin.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 13 ms
Searching for rirns.arin.net. A record at ns2.arin.net. [199.71.0.108] ...took 196 ms
Searching for dns1.viettel.com.vn. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for dns1.viettel.com.vn. A record at e.dns-servers.vn. [203.119.60.105] ...took 210 ms
Searching for dns1.viettel.com.vn. A record at dns2.vietel.com.vn. [203.113.131.2] No route to host
Searching for dns1.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 176 ms
Searching for 15.123.6.117.in-addr.arpa. PTR record at dns1.viettel.com.vn. [203.113.131.1]
...took 176 msSearching for dns1.viettel.com.vn. A record at e.dns-servers.vn. [203.119.60.105] ...took 210 ms
Searching for dns1.viettel.com.vn. A record at dns2.vietel.com.vn. [203.113.131.2] No route to host
Searching for dns1.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 176 ms
Nameserver dns1.viettel.com.vn. reports: No such host 15.123.6.117.in-addr.arpa.
Total elapsed query time: 1,242 ms