[Pdns-users] ptr - revese dns

[Luis Matos]

Thanks to all.

that is the nameserver of my datacenter ... i saw that on
http://www.dnsstuff.com/tools/ptr.ch?ip=212.54.133.46

thanks.

Michael Loftis wrote:

>
>
> --On April 19, 2006 10:51:04 PM +0100 Luis Matos 
> <gass at otiliamatos.ath.cx> wrote:
>
>
>> if the ip is, why not the reverse? good question ... the ip in 
>> quetion is
>> 212.54.133.46
>
>
>
> Reverse DNS has to be delegated either on a /24 or via CNAMEs in the 
> surrounding /24, you don't control your own reverse DNS if all you 
> have is a single IP, the ISP/provider of that IP controls it.  To that 
> end broadnet will have to add PTRs for you to your A records.  Note 
> that reverse DNS is *TWO* parts, a PTR, and a corresponding A record.
>
> d216-220-25-20:~ mloftis$ dig ns 133.54.212.in-addr.arpa
>
> ; <<>> DiG 9.2.2 <<>> ns 133.54.212.in-addr.arpa
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1313
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;133.54.212.in-addr.arpa.       IN      NS
>
> ;; ANSWER SECTION:
> 133.54.212.in-addr.arpa. 3600   IN      NS      ns.broadnet.pt.
> 133.54.212.in-addr.arpa. 3600   IN      NS      ns2.broadnet.pt.
>
> ;; Query time: 667 msec
>
>
>