Reverse DNS lookup

[Jeff Grossman]

> > resolve to the same IP, and the reverse lookup only has to resolve
to one
> > of them.
> 
> How is that? Is that via contacting the provider? I contacted mine and
they
> said since they own the IP addresses they had the right to decide the
> reverse DNS and would not change it or delegate it for me. They said I
> needed to request my own IP addresses from ARIN and buy them, then I
would
> have the rights to the reverse DNS arpa files. But I looked over ARIN
and
> they only support large requests of /24 and /19, and I don't need that
many
> (also the price is around $2400). I am currently only using four IP's,
the
> problem is I am paying for each and every one so I should be able to
decide
> what those IP's resolve into, right?

I don't believe that is correct.  You don't own the IP's.  Your ISP
does.  You are paying your ISP for the use of those IP's.  They have the
right to decide what the reverse DNS will be for those.  If you want to
your own IP's, you will need to go to ARIN and purchase them.