IP-s and vHosts

[K_meleonu]

Hi again,
I have a question about IP-s and virtual hosts.
Today i have routed a class of 265 on my server-s IP.
The server has a optical fiber connection and runs Fedora Core 4.
I vand to run some irc services on it like eggdrop, boucers, even IRCD and radio servers.
My question is: What i have to do to make the ip's to answer to the revers DNS.
I mean, when i tries /dns xx.xx.xx.xx (one of the ip's) to get : xx.xx.xx.xx resolved to my-vhost-is-nice.ath.cx for example.
From what i know i must make some changes in named.conf.
Can someone tell me exactily what should i do?

Thank you in advance,
Alex.

[falko]

Usually this is something the ISP that gave you the IP addresses has to do. Ask them, and if they say you can do that yourself, have a look here: http://www.howtoforge.com/traditional_dns_howto

[K_meleonu]

I have added
zone "86.106.86.in-addr.arpa" IN {
type master;
file "named.unu";
allow-update { none; };
};
in /etc/named.conf and i have created named.unu wich contains:

@ IN SOA mojoiua.netone.ro. root.localhost. (
2006012103; serial
28800; refresh, seconds
7200; retry, seconds
604800; expire, seconds
86400 ); minimum, seconds

;
NS ns1.netone.ro.;

5 IN PTR alex.mojoiua.netone.ro

mojoiua.netone.ro resolves into my server's ip.

From what i read on that tutorial, and from what i have in named.conf and named.unu alex.mojoiua.netone.ro should resolve in to 86.106.86.5 but it does not.

Did i made any mistake?
My server's IP is 89.34.209.254 and my IP class in vich i vand to make vhosts is 86.106.86.0/255 .

Also i saw this error:
[root@CrazyDesign etc]# nslookup 86.106.86.5
Server: 89.34.208.2
Address: 89.34.208.2#53

** server can't find 5.86.106.86.in-addr.arpa: NXDOMAIN


I also triyed to do like this: http://www.linuxforums.org/forum/redhat-fedora-linux-help/69058-dns.html
but no success

[falko]

I have added
zone "86.106.86.in-addr.arpa" IN {
type master;
file "named.unu";
allow-update { none; };
};
in /etc/named.conf and i have created named.unu wich contains:

Please use the full path to named.unu in your named.conf. Again, did you ask your ISP to do this for you?