A dedicated IP, is a unique IP allocated to a client for exclusive usage. Usually many different domains resolve to a single shared server IP. The reasons that a dedicated IP is necessary are usually limited to technical. In this page you may find all details and policies regarding dedicated IP allocation.
All of above three products are different, meaning that they comprise different levels of flexibility, pricing and limitations vary as well
Most shared hosting users have little need for a dedicated IP address. However, a dedicated IP address does provide certain advantages and/or is required by certain services as SSL.
In shared hosting packages you may order a maximum of 1 dedicated IP per account, strictly for SSL usage
VPS means flexibility! Depending on availability you may order up to 4 additional IP addresses other than the one that is included by default which means you can have a total of 5 usable IP addresses allocated in your VPS
A maximum of 3 additional single IPs can be ordered per dedicated server. But dedicated servers are subject to IP subnets allocation
Available subnets beyond 4 in total (1 main + 3 additional single IPs) can be ordered with Flexi-Pack
Available subnets are:
Due to global IPv4 exhaustion, IP allocation is pretty strict to ensure maximum utilization. And require technically valid justification of usage.