Reverse DNS Lookup for 216.186.6.10

Searching for 10.6.186.216.in-addr.arpa. PTR record at F.ROOT-SERVERS.NET. [192.5.5.241] ...took 6 ms
Searching for 10.6.186.216.in-addr.arpa. PTR record at c.in-addr-servers.arpa. [196.216.169.10] ...took 165 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 k.gtld-servers.net. [192.52.178.30] ...took 11 ms
Searching for arin.authdns.ripe.net. A record at rirns.arin.net. [199.253.249.53] ...took 91 ms

Searching for 10.6.186.216.in-addr.arpa. PTR record at arin.authdns.ripe.net. [193.0.9.10] ...took 11 ms

Searching for ruler.wa-k20.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 10 ms
Searching for ruler.wa-k20.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for ruler.wa-k20.net. A record at apple.wa-k20.net. [68.179.206.40] ...took 169 ms

Searching for 10.6.186.216.in-addr.arpa. PTR record at ruler.wa-k20.net. [68.179.206.139] ...took 176 ms
SERVFAIL
Searching for 10.6.186.216.in-addr.arpa. PTR record at apple.wa-k20.net. [68.179.206.40] ...took 168 ms
SERVFAIL
Searching for 10.6.186.216.in-addr.arpa. PTR record at apple.wa-k20.net. [68.179.206.40] ...took 170 ms
SERVFAIL
Searching for 10.6.186.216.in-addr.arpa. PTR record at ruler.wa-k20.net. [68.179.206.139] ...took 177 ms
SERVFAIL

None of the nameservers responded correctly.

Total elapsed query time: 1,177 ms