Reverse DNS and single IP address space

[James Earl]

On 2003.03.27 11:38 Victor Bondarenko wrote:
> On Thu, Mar 27, 2003 at 11:31:54AM -0700, James Earl wrote:
> [...]
> > Or, do I even need to worry about reverse DNS entries since my ISP
> > already has them setup?
> 
> If your ISP has reverse DNS for your IP(s), there's really no point in
> you mapping them on your own.  Your network might see whatever you've
> mapped, but the rest of the world will see what your ISP maps.

I'm assuming if I can use nslookup [ip-address] to get my hostname, 
that reverse DNS on the ISP is setup properly.  Is this an okay 
assumption?