Reverse lookups

[Barry Margolin]

In article <9ulfj6$7j6 at pub3.rc.vix.com>,
Paul_[FoKuS] <pauls at austin.rr.com> wrote:
>At work, we have a range of 64 ip addresses so we are subnetted like
>255.255.255.192.  My question is, since we don't have a class C
>network, does having reverse mapping zone files really help.  I mean
>if I wanted to do a lookup on an IP address we have here at work it
>just won't work unless you have at least a class C?  I am a little
>confused in this area, so any help would be much appreciated.  I am
>thinking that it won't work and that our ISP would have to maintain
>those, but I am not sure.  Can they point to us from there DNS though
>(the isps), and then would that allow me to do reverse lookups?

See RFC 2317 for the technique used to delegate reverse DNS for a subnet.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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