what IP addresses range can be used in a VPC?

You can use any IPv4 address range, including RFC 1918 or publicly routable IP ranges, for the primary CIDR block. For the secondary CIDR blocks, certain restrictions apply. Publicly routable IP blocks are only reachable via the Virtual Private Gateway and cannot be accessed over the Internet through the Internet gateway. AWS does not advertise customer-owned IP address blocks to the Internet. You can allocate an Amazon-provided IPv6 CIDR block to a VPC by calling the relevant API or via the AWS Management Console.