Searching for 12.52.6.117.in-addr.arpa. PTR record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for 12.52.6.117.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for 12.52.6.117.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 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 d.gtld-servers.net. [192.31.80.30] ...took 23 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for 12.52.6.117.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 188 msSearching for ns1.apnic.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 23 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for dns2.viettel.com.vn. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 12 ms
Searching for dns2.viettel.com.vn. A record at b.dns-servers.vn. [203.119.73.105] ...took 266 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 332 ms
Searching for 12.52.6.117.in-addr.arpa. PTR record at dns2.viettel.com.vn. [203.113.188.2]
...took 329 msSearching for dns2.viettel.com.vn. A record at b.dns-servers.vn. [203.119.73.105] ...took 266 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 332 ms
Nameserver dns2.viettel.com.vn. reports: No such host 12.52.6.117.in-addr.arpa.
Total elapsed query time: 1,763 ms