Searching for 187.143.251.131.in-addr.arpa. PTR record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 20 ms
Searching for 187.143.251.131.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 118 ms
Searching for 187.143.251.131.in-addr.arpa. PTR record at d.in-addr-servers.arpa. [200.10.60.53] ...took 118 ms
Searching for r.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 15 ms
Searching for r.arin.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for r.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 90 ms
Searching for 187.143.251.131.in-addr.arpa. PTR record at r.arin.net. [199.180.180.63]
...took 93 msSearching for r.arin.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for r.arin.net. A record at ns1.arin.net. [199.212.0.108] ...took 90 ms
Searching for mnetidns01.cf.ac.uk. A record at E.ROOT-SERVERS.NET. [192.203.230.10]
...took 34 ms
Searching for mnetidns01.cf.ac.uk. A record at nsd.nic.uk. [156.154.103.3] ...took 7 ms
Searching for mnetidns01.cf.ac.uk. A record at mnetidns01.cf.ac.uk. [131.251.62.12] ...took 25 ms
Searching for 187.143.251.131.in-addr.arpa. PTR record at mnetidns01.cf.ac.uk. [131.251.62.12]
...took 26 msSearching for mnetidns01.cf.ac.uk. A record at nsd.nic.uk. [156.154.103.3] ...took 7 ms
Searching for ns1.surfnet.nl. A record at G.ROOT-SERVERS.NET. [192.112.36.4]
...took 25 ms
Searching for ns1.surfnet.nl. A record at ns3.dns.nl. [194.0.25.24] ...took 6 ms
Searching for ns1.surfnet.nl. A record at ns2.surfnet.nl. [192.87.36.2] ...took 14 ms
Searching for mnetidns01.cf.ac.uk. A record at ns1.surfnet.nl. [192.87.106.101]
...took 12 msSearching for ns1.surfnet.nl. A record at ns3.dns.nl. [194.0.25.24] ...took 6 ms
Searching for ns1.surfnet.nl. A record at ns2.surfnet.nl. [192.87.36.2] ...took 14 ms
Searching for mnetidns01.cf.ac.uk. A record at mnetidns01.cf.ac.uk. [131.251.62.12] ...took 25 ms
Nameserver mnetidns01.cf.ac.uk. reports: No such host 187.143.251.131.in-addr.arpa.
Total elapsed query time: 497 ms