Multisite - Multiple primary domains

Hi,

This is probably a general question, but I'm struggling to find a definitive answer online.

We're looking to host 5 domain names, internationally, i.e. rokcreative.com, rokcreative.fr,
rokcreative.mx etc. but to control them via one Wordpress CMS platform.

Is this possible with the plugin available or is this only used for sub-domains?

Kind Regards,

James Wallsgrove