Searching for 121.55.146.38.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 13 ms
Searching for 121.55.146.38.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for 121.55.146.38.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 12 ms
Searching for auth1.dns.cogentco.com. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for auth1.dns.cogentco.com. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for auth1.dns.cogentco.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 8 ms
Searching for 121.55.146.38.in-addr.arpa. PTR record at auth1.dns.cogentco.com. [66.28.0.14]
...took 9 msSearching for auth1.dns.cogentco.com. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for auth1.dns.cogentco.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 8 ms
Nameserver auth1.dns.cogentco.com. reports: No such host 121.55.146.38.in-addr.arpa.
Total elapsed query time: 68 ms