Like, if I wanted to have subdomain.ipa.ddr.es.s.com

Only if you can take a fish's bicycle away. The concepts of IP and subdomains aren't related.

There's no such thing as forum.192.24.398.11, although you can access specific ports, so you'd get 192.24.398.11:80. ( Those are just four random numbers, by the way; 80 is a pretty common port. )

You can also host a thousand web sites on a single IP address. The global DNS system links a domain name ( forrestcroce.com ) to an IP address ( I don't know mine off hand ) so the request can be routed, but then that server uses the domain to look up the physical path to serve from.

Originally Posted by JGiannotti

Like, if I wanted to have subdomain.ipa.ddr.es.s.com

Do you want to replace domain name for IP?

Could you please explain to us what you want exactly?

I think that any hosterwill be able to provide you dedicated IP.

If you were asking for a ip for a subdomain, I'm quite positive that its positive. You can have a shared Ip. But, I won't say its a reliable method.

if you wanted to use an IP for a website, it would be for example 192.24.398.11~username/forum

This can be done quite easily. If you're on a server with a control panel (cPanel / Plesk / Helm / etc), then create another account for the subdomain in question (since, in www.mydomain.com, "www" is a subdomain of "mydomain", is a subdomain of "com")

Thus, you have the account for mydomain.com, now create a new account (not an addon) for subdomain.mydomain.com, and then either purchase another dedicated IP from your host, or if you have already, just assign.

The basics behind this, if you need to know, or don't have a control panel, is that you'll create a new virtual host in /etc/httpd/conf/httpd.conf - and you can assign a dedicated IP to any virtual host

hth

If you are using whm/cpanel, create a subdomain in your cpanel and assign an ip to this subdomain through whm (DNS setting). Its very easy.