Help with in-addr.arpa definitions for a subnet please???

[Michael Kjorling]

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A reverse zone file isn't any different from a forward zone file. Put
an appropriate SOA, NS records followed by PTRs into it. The main
difference is the kind of records you commonly put into them; PTRs
instead of A, CNAME and MX RRs.

However, you need to talk to your ISP first:

> [michael at varg michael]$ dig -x 65.86.41.242
>
> ; <<>> DiG 9.2.0rc10 <<>> -x 65.86.41.242
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18800
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
>
> ;; QUESTION SECTION:
> ;242.41.86.65.in-addr.arpa.     IN      PTR
>
> ;; ANSWER SECTION:
> 242.41.86.65.in-addr.arpa. 86400 IN     PTR     65-86-41-242.client.dsl.net.
>
> ;; AUTHORITY SECTION:
> 41.86.65.in-addr.arpa.  86400   IN      NS      ns1.dsl.net.
> 41.86.65.in-addr.arpa.  86400   IN      NS      ns2.dsl.net.
>
> ;; ADDITIONAL SECTION:
> ns1.dsl.net.            3600    IN      A       209.87.64.70
> ns2.dsl.net.            3600    IN      A       209.87.79.232
>
> ;; Query time: 169 msec
> ;; SERVER: 213.88.238.194#53(213.88.238.194)
> ;; WHEN: Wed Nov 21 12:44:28 2001
> ;; MSG SIZE  rcvd: 152
>
> [michael at varg michael]$


Michael Kjörling


On Nov 21 2001 05:57 -0000, Bob Mariotti wrote:

> DNS gurus:
>
> I've been reading this group for a few months as well as scanning
> google groups and reading "the bibles".  However, I am still confused
> as to how to properly define a reverse file for a subnet.
>
> For any of you who are DNS 'experts' this is most likely a simple
> task.  Therefore, could someone please post the basic entries for
> accomplishing this (not the entire reverse file, just the pertinent
> stuff)?
>
> My subnet allocations is:  65.86.41.240/28 yielding public IP's of
> .242 - .254
>
> Thanks in advance for helping another ignorant reader.
>
> BobM

- -- 
Michael Kjörling  --  Programmer/Network administrator  ^..^
PGP: 95f1 074d 336d f8f0 f297 6a5b 2aa3 7bfd 8a70 e33e   \/
Internet: michael at kjorling.com -- FidoNet: 2:204/254.4

"There is something to be said about not trying to be glamorous
and popular and cool. Just be real -- and life will be real."
(Joyce Sequichie Hifler, September 13 2001, www.hifler.com)
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