This would appear to be the same issue raised before (from a 61.something IP iirc):
148.143.65.194.in-addr.arpa is an alias for 148.sps.pt.
The network administrator is using a 'CNAME' record to return a hostname for an ip (incorrectly).
22.175.89.130.in-addr.arpa domain name pointer forums.mirc.com.
The network administrator is using a 'PTR' record to return a hostname for an ip (correctly).
See
this post for more information.
Hope that helps