Short Answer
Yes
Long Answer
Servers whose Server Details list their “IP SPACE” as Reserved are grouped into the same private VLAN. You may assign any RFC 1918 private address to your interfaces; these addresses will not conflict with any other customer.
Servers whose Server Details list their “IP SPACE” as Shared belong to a shared pool, and the IP address assigned to the server is fixed. Attempting to change the IP will result in dropped packets.