Searching for 121.171.101.38.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for 121.171.101.38.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 93 ms
Searching for 121.171.101.38.in-addr.arpa. PTR record at a.in-addr-servers.arpa. [199.180.182.53] ...took 93 ms
Searching for auth1.dns.cogentco.com. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for auth1.dns.cogentco.com. A record at h.gtld-servers.net. [192.54.112.30] ...took 7 ms
Searching for auth1.dns.cogentco.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 12 ms
Searching for 121.171.101.38.in-addr.arpa. PTR record at auth1.dns.cogentco.com. [66.28.0.14]
...took 11 msSearching for auth1.dns.cogentco.com. A record at h.gtld-servers.net. [192.54.112.30] ...took 7 ms
Searching for auth1.dns.cogentco.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 12 ms
Nameserver auth1.dns.cogentco.com. reports: No such host 121.171.101.38.in-addr.arpa.
Total elapsed query time: 153 ms