Searching for 7.249.74.27.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for 7.249.74.27.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 154 ms
Searching for 7.249.74.27.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 154 ms
Searching for ns1.apnic.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for ns1.apnic.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for 7.249.74.27.in-addr.arpa. PTR record at ns1.apnic.net. [203.119.42.53]
...took 188 msSearching for ns1.apnic.net. A record at f.gtld-servers.net. [192.35.51.30] ...took 6 ms
Searching for ns1.apnic.net. A record at ns1.apnic.net. [203.119.42.53] ...took 188 ms
Searching for dns1.vietel.com.vn. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 13 ms
Searching for dns1.vietel.com.vn. A record at h.dns-servers.vn. [202.47.142.105] ...took 227 ms
Searching for dns1.vietel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 352 ms
Searching for 7.249.74.27.in-addr.arpa. PTR record at dns1.vietel.com.vn. [203.113.131.1]
...took 341 msSearching for dns1.vietel.com.vn. A record at h.dns-servers.vn. [202.47.142.105] ...took 227 ms
Searching for dns1.vietel.com.vn. A record at dns1.vietel.com.vn. [203.113.131.1] ...took 352 ms
Nameserver dns1.vietel.com.vn. reports: No such host 7.249.74.27.in-addr.arpa.
Total elapsed query time: 1,494 ms