Technical hosting question
 

Let's say that I have a domain hosted on a dedicated server with one hosting provider, is it possible to have a subdomain of that domain hosted with a completely different hosting provider?

For example:

porn.com hosted with ISPrime

videos.porn.com hosted with Webair

???

wait, yes it can.. sry

Absolutely.

what he said

Assuming that it's possible, what are the details of making it work?

yes

whose hosting your dns?

WhatIs.Com and look for DNS

Let's assume ISPrime is

Would they have to point the subdomain to the other provider?

in the DNS zone file, set up an A RECORD for support.mydomain.com (support) and enter the IP of the server this will be set up on (and set up the site on the other server of course).

just icq me at 210877237. Its more complicated it one of your hosting companies is doing your dns but still posible.

exactly, but if your first hosting company hosts your domain they may not point the additional sub-domain to another provider....but you could still use an ip address or a redirect.

Would it be better if I used some independent 3rd party DNS service?

Using a 3rd party DNS isnt a problem as long as you know what you are doing. Mistakes with DNS can have some very serious complications for your obviously. Also, your host may not mind updating your DNS record to point a subdomain elsewhere, even if it is to a different host. Might be worth it to speak to them.