ProxCP Admin - Manage IPv4 Pool
From ProxCP Documentation
This page allows Admin users to add, view and delete IP addresses from a IPv4 pool.
This pool is only used for IP assignments when creating a service using the WHMCS or Blesta billing module. If you manually create a ProxCP service, the IP assignment does not need to come from this IPv4 pool.
The pool can be populated in ranges (CIDR) or with single IP addresses.
This pool is also used by the billing modules for NAT services. NAT IP ranges must be included in this pool for automatic assignments to function correctly.