Searching for 21.169.141.86.in-addr.arpa. PTR record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for 21.169.141.86.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 172 ms
SERVFAIL
SERVFAIL
Searching for 21.169.141.86.in-addr.arpa. PTR record at a-ns.bt.com. [109.159.245.1] Timed out while trying to resolve 21.169.141.86.in-addr.arpa./PTR, id=24780
Searching for 21.169.141.86.in-addr.arpa. PTR record at b-ns.bt.com. [109.159.245.17] Timed out while trying to resolve 21.169.141.86.in-addr.arpa./PTR, id=13565
Searching for 21.169.141.86.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 172 ms
Searching for pri.authdns.ripe.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 38 ms
Searching for pri.authdns.ripe.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for pri.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 92 ms
Searching for 21.169.141.86.in-addr.arpa. PTR record at pri.authdns.ripe.net. [193.0.9.5]
...took 12 msSearching for pri.authdns.ripe.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 12 ms
Searching for pri.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 92 ms
Searching for ns0.bt.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for ns0.bt.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns0.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 30 ms
Searching for 21.169.141.86.in-addr.arpa. PTR record at ns0.bt.net. [217.35.209.188]
...took 27 msSearching for ns0.bt.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 12 ms
Searching for ns0.bt.net. A record at ns2.bt.net. [217.32.105.90] ...took 30 ms
Searching for a-ns.bt.com. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for a-ns.bt.com. A record at g.gtld-servers.net. [192.42.93.30] ...took 8 ms
Searching for a-ns.bt.com. A record at dydns0.bt.com. [193.113.32.156] ...took 28 ms
Searching for 21.169.141.86.in-addr.arpa. PTR record at a-ns.bt.com. [109.159.245.1]
...took 21 msSearching for a-ns.bt.com. A record at g.gtld-servers.net. [192.42.93.30] ...took 8 ms
Searching for a-ns.bt.com. A record at dydns0.bt.com. [193.113.32.156] ...took 28 ms
SERVFAIL
Searching for b-ns.bt.com. A record at K.ROOT-SERVERS.NET. [193.0.14.129]
...took 39 ms
Searching for b-ns.bt.com. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for b-ns.bt.com. A record at eddns0.bt.com. [193.113.57.242] ...took 29 ms
Searching for 21.169.141.86.in-addr.arpa. PTR record at b-ns.bt.com. [109.159.245.17]
...took 21 msSearching for b-ns.bt.com. A record at g.gtld-servers.net. [192.42.93.30] ...took 7 ms
Searching for b-ns.bt.com. A record at eddns0.bt.com. [193.113.57.242] ...took 29 ms
SERVFAIL
Searching for 21.169.141.86.in-addr.arpa. PTR record at a-ns.bt.com. [109.159.245.1] Timed out while trying to resolve 21.169.141.86.in-addr.arpa./PTR, id=24780
Searching for 21.169.141.86.in-addr.arpa. PTR record at b-ns.bt.com. [109.159.245.17] Timed out while trying to resolve 21.169.141.86.in-addr.arpa./PTR, id=13565
None of the nameservers responded correctly.
Total elapsed query time: 4,666 ms