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REVERSE DNS Practices.

 the 20th or 21st century answer?

 if you really don't care about the actual node, then you should map the
 numbers to topologically significant names - after all, the reverse map
 follows topology, not some goofball - layer 9 - ego trip thing.

 or - the more modern approach is to let the node (w/ proper authorization)
 do a secure dynamic update of the revserse map - so the forward and reverse
 delegations match. ... a -VERY- useful technique.


On Sat, Mar 21, 2009 at 01:38:55PM +0300, bruce at yoafrica.com wrote:
> Slighty related...
> Can people please post their recommended reverse dns naming conventions for a small ISP with growth and scalability in mind. 
> I already have one drawn up, but I would like to contrast and compare :D
> Thanks 
> On 21 Mar 2009 10:32:30 -0000, John Levine <johnl at iecc.com> wrote:
> >> I want to ask some folks out there that maintain reverse DNS queries
> >>of their respective IP blocks. I want to know if there is a need for
> >>me to contact my upstream provider. I am in charge of 2 /24's under
> >>LACNIC. I've already registered my DNS servers on LACNIC. but for some
> >>weird reason it's not owning reverse resolves. any tips would be
> >>gladly appreciated.
> > 
> > The RIRs don't maintain rDNS for you.  You'll have to trace the
> > delegations downward from in-addr.arpa, find out who's handling your
> > /24's, and contact them to get them to delegate your chunks to you.
> > 
> > R's,
> > John