Searching for 215.224.78.115.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for 215.224.78.115.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for 215.224.78.115.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms
Searching for ns2.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for ns2.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for ns2.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for 215.224.78.115.in-addr.arpa. PTR record at ns2.apnic.net. [203.119.95.53]
...took 6 msSearching for ns2.apnic.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for ns2.apnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for dns1.viettel.com.vn. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for dns1.viettel.com.vn. A record at g.dns-servers.vn. [204.61.216.115] ...took 6 ms
Searching for dns1.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 179 ms
Searching for 215.224.78.115.in-addr.arpa. PTR record at dns1.viettel.com.vn. [203.113.131.1]
...took 178 msSearching for dns1.viettel.com.vn. A record at g.dns-servers.vn. [204.61.216.115] ...took 6 ms
Searching for dns1.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 179 ms
Nameserver dns1.viettel.com.vn. reports: No such host 215.224.78.115.in-addr.arpa.
Total elapsed query time: 451 ms