Reverse DNS Lookup for 172.58.136.31

Searching for 31.136.58.172.in-addr.arpa. PTR record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 15 ms
Searching for 31.136.58.172.in-addr.arpa. PTR record at f.in-addr-servers.arpa. [193.0.9.1] ...took 11 ms

Searching for x.arin.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 14 ms
Searching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 12 ms
Searching for x.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 145 ms

Searching for 31.136.58.172.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63] ...took 98 ms

Searching for ns10.tmobileus.net. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 15 ms
Searching for ns10.tmobileus.net. A record at d.gtld-servers.net. [192.31.80.30] ...took 24 ms
Searching for ns10.tmobileus.net. A record at ns10.tmobileus.net. [208.54.99.244] ...took 126 ms

Searching for 31.136.58.172.in-addr.arpa. PTR record at ns10.tmobileus.net. [208.54.99.244] ...took 127 ms
REFUSED

Searching for ns10.tmobileus.com. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 15 ms
Searching for ns10.tmobileus.com. A record at e.gtld-servers.net. [192.12.94.30] ...took 24 ms
Searching for ns10.tmobileus.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 12 ms

Searching for 31.136.58.172.in-addr.arpa. PTR record at ns10.tmobileus.com. [208.54.147.200] ...took 159 ms
REFUSED
Searching for 31.136.58.172.in-addr.arpa. PTR record at ns10.tmobileus.net. [208.54.99.244] ...took 124 ms
REFUSED
Searching for 31.136.58.172.in-addr.arpa. PTR record at ns10.tmobileus.com. [208.54.147.200] ...took 159 ms
REFUSED

None of the nameservers responded correctly.

Total elapsed query time: 1,080 ms