Dedicated IP and Domain Mapping

Hi, hope someone can clarify this for me.

We will have a WP Multisite installed on mainsite.com with a dedicated IP so we can use domain mapping.

i.e. mainsite.com will have sub domain sites called one.mainsite.com, two.mainsite.com etc.

Then we will have these domains, onesite.com, twosite.com etc. mapping to the sub domain sites.

Will these domains also require a dedicated IP or can they be parked with a static IP?

Thanks. Steve