Searching for 19.172.51.87.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 13 ms
Searching for 19.172.51.87.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for 19.172.51.87.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for pri.authdns.ripe.net. A record at D.ROOT-SERVERS.NET. [199.7.91.13]
...took 11 ms
Searching for pri.authdns.ripe.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 24 ms
Searching for pri.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 197 ms
Searching for 19.172.51.87.in-addr.arpa. PTR record at pri.authdns.ripe.net. [193.0.9.5]
...took 11 msSearching for pri.authdns.ripe.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 24 ms
Searching for pri.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 197 ms
Searching for auth06.ns.tdc.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 11 ms
Searching for auth06.ns.tdc.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for 19.172.51.87.in-addr.arpa. PTR record at auth06.ns.tdc.net. [194.192.207.174]
...took 16 msSearching for auth06.ns.tdc.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for auth02.ns.tele.dk. A record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 11 ms
Searching for auth02.ns.tele.dk. A record at c.nic.dk. [185.159.199.45] ...took 5 ms
Searching for auth02.ns.tele.dk. A record at auth02.ns.tele.dk. [194.192.207.166] ...took 16 ms
Searching for auth06.ns.tdc.net. A record at auth02.ns.tele.dk. [194.192.207.166]
...took 16 msSearching for auth02.ns.tele.dk. A record at c.nic.dk. [185.159.199.45] ...took 5 ms
Searching for auth02.ns.tele.dk. A record at auth02.ns.tele.dk. [194.192.207.166] ...took 16 ms
Nameserver auth06.ns.tdc.net. reports: No such host 19.172.51.87.in-addr.arpa.
Total elapsed query time: 357 ms