I did a check for on pingdom dot com and the DNS checktool came up with this
warning
`Could not find reverse address for 137.74.125.138 (138.125.74.137.in-addr.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could not find reverse address for 137.74.125.139 (139.125.74.137.in-addr.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).’
what does this all mean?