Reverse Dns Question
Wouter Van Crombruggen
woutervc at skynet.be
Sat Jul 7 15:51:09 UTC 2001
This is indeed a classless subnet, namely 64.42.54.232/29. This can be
delegated using the following "trick":
in the zonefile 54.42.64.in-addr.arpa we create the following records:
232/29 IN NS ns1.yournamserver.com
232/29 IN NS ns2.yournamserver.com
This means the subdomain 232/29.54.42.64.in-addr.arpa is delegated to your
server.
Then within the zonefile 54.42.64.in-addr.arpa we create a CNAME record for
every IP within your range:
232 IN CNAME 232.232/29.54.42.64.in-addr.arpa.
233 IN CNAME 233.232/29.54.42.64.in-addr.arpa.
until
240 IN CNAME 240.232/29.54.42.64.in-addr.arpa.
On ns1.yournamserver.com, you create the zone 232/29.54.42.64.in-addr.arpa
with the following records:
232 IN PTR your.first.host.
233 IN PTR your.second.host.
until
240 IN PTR your.last.host.
That's it :-)
Wouter.
"Mike Lander" <mechiman at home.com> wrote in message
news:9i6cck$eqc at pub3.rc.vix.com...
> If you are assigned a ip range of 64.42.54.233~64.42.54.239 with a masq
> 255.255.255.248 (I am just trying to figure out what a classless subnet
is).
>
> Is this a classless subnet? Since it gives you six usable IP's. The reason
I
> ask is if you Isp assigns you a range like this. Is there a way to make
> a reverse zone. I was told I would have to obtain a say whole class C
subnet
> to be able to use reverse zones. I have my own name servers and domain
> and everything works without the reverse zones. Since a reverse zone for
> this would be 54.42.64 you cant create a zone without taking up all the
> addresses
> between. This has me a little puzzled could anyone shed some light on this
> please?
>
>
> Mike
>
>
>
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