Searching for 121.73.162.172.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 31 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at ns4-04.azure-dns.info. [208.84.5.4] ...took 7 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms
Searching for arin.authdns.ripe.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12]
...took 11 ms
Searching for arin.authdns.ripe.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for arin.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 209 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at arin.authdns.ripe.net. [193.0.9.10]
...took 12 msSearching for arin.authdns.ripe.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for arin.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 209 ms
Searching for ns4-02.azure-dns.info. A record at J.ROOT-SERVERS.NET. [192.58.128.30]
...took 6 ms
Searching for ns4-02.azure-dns.info. A record at d0.info.afilias-nst.org. [199.254.50.1] ...took 6 ms
Searching for ns4-02.azure-dns.info. A record at ns4-04.azure-dns.info. [208.84.5.4] ...took 6 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at ns4-02.azure-dns.info. [208.84.5.2]
...took 6 msSearching for ns4-02.azure-dns.info. A record at d0.info.afilias-nst.org. [199.254.50.1] ...took 6 ms
Searching for ns4-02.azure-dns.info. A record at ns4-04.azure-dns.info. [208.84.5.4] ...took 6 ms
Searching for 121.73.162.172.in-addr.arpa. PTR record at ns4-04.azure-dns.info. [208.84.5.4] ...took 7 ms
Nameserver ns4-04.azure-dns.info. reports: No such host 121.73.162.172.in-addr.arpa.
Total elapsed query time: 312 ms