The Members Area offers a switch function which not only allows you to switch to another county, but to generate a new IP on the same country.

For example; if you're on USA1 and want a new IP on USA1, keep the given USA1 country ticked and simply hit the "Switch me.." button.

A new USA1 IP will be assigned to you, then just wait a few minutes for your DNS to propagate and you're all set!