Searching for 38.72.6.117.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for 38.72.6.117.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for 38.72.6.117.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for ns3.lacnic.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 75 ms
Searching for ns3.lacnic.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 11 ms
Searching for ns3.lacnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for 38.72.6.117.in-addr.arpa. PTR record at ns3.lacnic.net. [200.3.13.14]
...took 204 msSearching for ns3.lacnic.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 11 ms
Searching for ns3.lacnic.net. A record at ns4.apnic.net. [202.12.31.53] ...took 16 ms
Searching for dns2.viettel.com.vn. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for dns2.viettel.com.vn. A record at b.dns-servers.vn. [203.119.73.105] ...took 265 ms
Searching for dns2.viettel.com.vn. A record at dns2.vietel.com.vn. [203.113.131.2] No route to host
Searching for dns2.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 327 ms
Searching for 38.72.6.117.in-addr.arpa. PTR record at dns2.viettel.com.vn. [203.113.188.2]
...took 318 msSearching for dns2.viettel.com.vn. A record at b.dns-servers.vn. [203.119.73.105] ...took 265 ms
Searching for dns2.viettel.com.vn. A record at dns2.vietel.com.vn. [203.113.131.2] No route to host
Searching for dns2.viettel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 327 ms
Nameserver dns2.viettel.com.vn. reports: No such host 38.72.6.117.in-addr.arpa.
Total elapsed query time: 1,584 ms