First of all, sorry if this is not the right forum - I was not sure on where to post it.

I'm looking for something very simple (although comples for my low level of knowledge). I would like to register a domain (and host a website) having such name servers:

ns1.worldispnetwork.com / ns2.worldispnetwork.com

or anything else at worldispnetwork.com

Is that possible? At which registrar/host should I look?

Just to explain that strange need: we are in the middle of a game (alternate reality) where all the related websites are on those nameservers...therefore, I would like to put up a site to interact with this game on same servers.

You cannot register worldispnetwork.com because it's already taken. You need to think up a domain which is not already registered. You can make whois lookups here... www.iwhois.com. You can register domains here... www.godaddy.com. You will need to contact someone at worldispnetwork.com for information on how to interact your new domain with their game servers.

I'm pretty sure that worldispnetwork is owned by hostdepartment. We signed up with them for a month. - I am 95% sure those were the nameservers they used for resellers. Unfortunatly I have nothing nice to say about HD - I personally wouldn't advise you use them.